All C Solutions on Gang of Coders

Total of 2264 C Solutions

What is the "-->" operator in C/C++?

C Operators Code Formatting Standards Compliance

What does "static" mean in C?

C Syntax Static

Removing trailing newline character from fgets() input

C String Gcc Newline Fgets

How to convert an int to string in C?

C String Integer

Is "==" in sorted array not faster than unsorted array?

C Arrays Performance Optimization Sortedlist

'\0' evaluates false, "\0" evaluates true

C Arrays String Null Kernighan and-Ritchie

Violating of strict-aliasing in C, even without any casting?

C Strict Aliasing

Why is the maximum size of an array "too large"?

C Gcc Mingw Size T Stdint

How do I start threads in plain C?

C Multithreading

Capturing stdout from a system() command optimally

C++C System Stdout

Why can't we initialize members inside a structure?

C Struct Initialization Member

CRC32 C or C++ implementation

Linux API to list running processes?

C++C Linux Api Process

What does the %*s format specifier mean?

C Printf Format Specifiers

How does this bitwise operation check for a power of 2?

C Math Bit Manipulation

clearing a small integer array: memset vs. for loop

C Performance Benchmarking

GCC's assembly output of an empty program on x86, win32

C Gcc X86 Gnu Assembler Tdm Mingw

Regular expression for a string literal in flex/lex

C Regex Lex String Literals Flex Lexer

What is the use of typedef?

Can sizeof return 0 (zero)

python tracing a segmentation fault

Python C Debugging

What does the extern keyword mean?

C Objective C Extern

What is the best way to suppress A "Unused variable x" warning?

How to display hexadecimal numbers in C?

C Format Integer Printf Hex

How do I convert a Python list into a C array by using ctypes?

Python C Ctypes

Extracting bits with a single multiplication

C Multiplication Bit Manipulation

What does a type followed by _t (underscore-t) represent?

C Naming Conventions Types

gcc -g :what will happen

Why are SDL and OpenGL related?

C++C Opengl Sdl

Dynamically create an array of strings with malloc

C Arrays Malloc

How to count characters in a unicode string in C

C String Unicode Ascii

Does dynamic memory allocation differ in C and C++ in popular implementations?

C++C Memory Management

ld.exe: cannot open output file ... : Permission denied

C Windows Windows 7 Codeblocks Mingw32

A simple explanation of what is MinGW

C Windows Gcc Cygwin Mingw

Check glibc version for a particular gcc compiler

What are the incompatible differences between C(99) and C++(11)?

Should I worry about the alignment during pointer casting?

C++C Casting Alignment

Why are global variables always initialized to '0', but not local variables?

C Variables Global Local

Stringification - how does it work?

C++C C Preprocessor Stringification

Why is a = (a+b) - (b=a) a bad choice for swapping two integers?

C++C Swap Undefined Behavior Sequence Points

When to use pthread_exit() and when to use pthread_join() in Linux?

C Linux Pthreads

gcc: undefined reference to

C++C Gcc Linker Undefined Reference

How do I ask for "at least" a size of an int in C

C++C Optimization

Why an expression instead of a constant, in a C for-loop's conditional?

C For Loop Coding Style Expression Constantfolding

What is a bus error? Is it different from a segmentation fault?

C Unix Segmentation Fault Bus Error

Is multiplication and division using shift operators in C actually faster?

C++C Division Multiplication Bit Shift

What does the constant 0.0039215689 represent?

C Floating Point Constants Magic Numbers

When should I just use "int" versus more sign-specific or size-specific types?

C Unsigned Signed

Why isn't there int128_t?

C++C C++ Standard-Library C Standard-Library

Does a[a[0]] = 1 produce undefined behavior?

C Language Lawyer C99 Undefined Behavior

C/C++: Static function in header file, what does it mean?

C++C Function Static

Implementing a HashMap in C

C Data Structures Hashmap

Resources for learning C program design

Is it ok to use "classic" malloc()/free() in Objective-C/iPhone apps?

C Objective C Memory Management

How can Inheritance be modelled using C?

C Oop Inheritance

Algorithm to generate bit mask

C Algorithm Bit Manipulation

Comparison operation on unsigned and signed integers

C Gcc Unsigned Signed

What does malloc(0) return?

C Linux Pointers Malloc Realloc

How to perform atomic operations on Linux that work on x86, arm, GCC and icc?

C++C Linux Atomic

Can I mix static and shared-object libraries when linking?

C Gcc Static Linker

What does an object file contain?

C++C Compilation

Why do C programmers use typedefs to rename basic types?

Is returning void valid code?

How do I create an array of strings in C?

C Arrays String

Why does the arrow (->) operator in C exist?

C Pointers Dereference

When is it worthwhile to use bit fields?

C++C Bit Fields

Which functions in the C standard library commonly encourage bad practice?

C Security C99 Standard Library

Memory alignment in C-structs

C++C Memory Memory Alignment Structure Packing

Why does memset take an int instead of a char?

Do unused functions get optimized out?

C++C Compiler Construction

How to printf long long

C Long Integer Pi

Which of sprintf/snprintf is more secure?

C Security Unix Printf Secure Coding

How to use the addr2line command in Linux?

C Linux Valgrind Addr2line

Multi-character constant warnings

C++C Casting Compiler Warnings Portability

Writing a "real" interactive terminal program like vim, htop, ... in C/C++ without ncurses

C++C Terminal Interactive

Function pointers and address of a function

C Function Pointers Function Pointers

Will a `char` always-always-always have 8 bits?

python bindings, how does it work?

Python C Binding

Function to Calculate a CRC16 Checksum

How to create a struct on the stack in C?

C Heap Memory Stack Memory

Printing leading zeroes for hexadecimal in C

C Linux Formatting

Why do some kernel programmers use goto instead of simple while loops?

C Linux Loops Linux Kernel Goto

C/C++ Why to use unsigned char for binary data?

C++C Character Encoding Bytebuffer Rawbytestring

variably modified array at file scope in C

C Arrays Static

What happens when I assign long int to int in C?

C Casting Integer Variable Assignment Long Integer

Does standard c library provides linked list etc. data structures?

C Gcc Data Structures Glibc

Is there any reason for using if(1 || !Foo())?

C++C If Statement Syntax Logical Operators

How to convert a string to integer in C?

Purpose of while(1); statement in C

What does asm volatile do in C?

C Gcc Inline Assembly

iOS library to BitCode

C Ios8 Xcode7 Beta2 Bitcode

Is this a good way to free memory?

Loop starting at -1 doesn't print anything

C Loops Integer Sizeof Negative Number

In a structure, is it legal to use one array field to access another one?

C++C Arrays Struct

Are char arrays guaranteed to be null terminated?

C String Literals Array Initialization

How can I include a C header that uses a C++ keyword as an identifier in C++?

Passing multidimensional arrays as function arguments in C

C Function Multidimensional Array

How to make a char string from a C macro's value?

C C Preprocessor Dry

Printing pointers in C

Java - C-Like Fork?

Light C Unicode Library

C Unicode Utf 8

Difference between C/C++ Runtime Library and C/C++ Standard Library

How to prevent multiple definitions in C?

C Multiple Definition-Error

Difference between static in C and static in C++??

Function pointer as a member of a C struct

C Function Pointers

Passing a structure through Sockets in C

C Sockets Recv Sendto

What is the difference between far pointers and near pointers?

Why does C have a distinction between -> and .?

Can I display the value of an enum with printf()?

Object oriented programming in C

Why is (void) 0 a no operation in C and C++?

C++C Compiler Construction

Cumulative Normal Distribution Function in C/C++

C++C Math Statistics Distribution

C: socket connection timeout

C Network Programming

Warning: comparison with string literals results in unspecified behaviour

C - How to implement Set data structure?

C Algorithm Math Data Structures Set

In a C function declaration, what does "..." as the last parameter do?

C Syntax Function Parameters

Finding the centroid of a polygon?

C++C Vector Vector Graphics

Make GNU make use a different compiler

One-way flight trip problem

Declaring and initializing arrays in C

C Arrays Initialization

C API design: Who should allocate?

C Api Memory Management Malloc

Why exactly do we need a "Circular Linked List" (singly or doubly) data structure?

C Data Structures Linked List Circular List

CreateProcess: No such file or directory

C/C++: switch for non-integers

C++C Switch Statement

In C, are arrays pointers or used as pointers?

C Arrays Pointers

Assigning negative numbers to an unsigned int?

Is there const in C?

C++C Constants Language Comparisons

How to print variable addresses in C?

C Pointers Memory Address

How to remove the character at a given index from a string in C?

Increment void pointer by one byte? by two?

How to compile Clang on Windows

C++C Windows Clang

Append Char To String in C?

Anonymous functions using GCC statement expressions

C Gcc Lambda Anonymous Function

How does malloc work in a multithreaded environment?

C Linux Gcc Malloc X86 64

How to make an HTTP get request in C without libcurl?

C Http Sockets Networking Http Headers

Why can two different enum enumeration-constants have the same integer value?

C/C++ int[] vs int* (pointers vs. array notation). What is the difference?

C++C Arrays Pointers Standards

How clear gdb command screen?

C++C Gcc Gdb Binutils

C function pointer syntax

undefined reference to curl_global_init, curl_easy_init and other function(C)

Why does rand() + rand() produce negative numbers?

Strange definitions of TRUE and FALSE macros

C++C Macros Boolean Obfuscation

how to find gcc version on mac

Dereferencing a pointer to 0 in C

C Pointers Memory Dereference

Can I mimic a C header that redefines bool in C++?

C++C Typedef Mixing

Where is the bluetooth/bluetooth.h located in Linux?

C Linux Bluetooth Ibeacon Bluez

Alternatives to `while (1)` to simplify branching

Can XOR of two integers go out of bounds?

C++C Bit Manipulation Integer Overflow Bitwise Xor

Why use abs() or fabs() instead of conditional negation?

C++C Variables Negation Absolute Value

Array-syntax vs pointer-syntax and code generation?

C Arrays Pointers Pointer Arithmetic Errata

What is a jump table?

C++C Memory Embedded

Undefined Symbol ___gxx_personality_v0 on link

Is returning a pointer to a static local variable safe?

Why do you have to link the math library in C?

C Compilation math.h

Arrow operator (->) usage in C

C Pointers Syntax

What is double star (eg. NSError **)?

C Objective C Cocoa Pointers Multiple Indirection

Smart pointers/safe memory management for C?

C Memory Pointers C99 Smart Pointers

Should I explicitly cast malloc()'s return value?

C Pointers Casting

getopt does not parse optional arguments to parameters

C Arguments Getopt Getopt Long Optional Arguments

Conditional operator differences between C and C++

C++C Conditional Operator

How to add two numbers without using ++ or + or another arithmetic operator

C++C Algorithm Bit Manipulation

Is it possible to print a preprocessor variable in C?

C Variables C Preprocessor

What is the best autocomplete/suggest algorithm,datastructure [C++/C]

C++C Algorithm Search Autocomplete

How to include a dynamic array INSIDE a struct in C?

C Pointers Arrays Struct Memory Management

Fastest way to calculate a 128-bit integer modulo a 64-bit integer

C Algorithm X86 Modulo Assembly

Embedding binary blobs using gcc mingw

C Gcc Binary Mingw

C: using clock() to measure time in multi-threaded programs

In C99, is f()+g() undefined or merely unspecified?

C C99 Undefined Behavior Sequence Points Unspecified Behavior

C Switch-case curly braces after every case

C Switch Statement

Pipe buffer size is 4k or 64k?

C Linux Size Buffer Pipe

How define an array of function pointers in C

C++C Arrays Function Pointers

Zero an array in C code

Why / when to use `intptr_t` for type-casting in C?

C Memory Management Types Casting Intptr

C: How do you declare a recursive mutex with POSIX threads?

C Multithreading Pthreads Mutex Recursive Mutex

Android NDK: getting the backtrace

Android C++C Android Ndk

How to dynamically allocate memory space for a string and get that string from user?

C String Memory Management Malloc Dynamic

Does readdir() guarantee an order?

What is the difference between intXX_t and int_fastXX_t?

C Optimization Types Integer C99

sending blocks of 2D array in C using MPI

C Parallel Processing Mpi

Correct way of passing 2 dimensional array into a function

Why does NaN - NaN == 0.0 with the Intel C++ Compiler?

C++C Floating Point Ieee 754 Icc

How do malloc() and free() work?

C++C Memory Management Malloc Free

Is there a REPL for C programming?

C Read Eval-Print-Loop

What is the difference between memcmp, strcmp and strncmp in C?

C String C Strings

How does similar_text work?

Php Javascript C

What is the difference between stdin and STDIN_FILENO?

String termination - char c=0 vs char c='\0'

C String C Strings Null Terminated Ansi C

When is it valid to access a pointer to a "dead" object?

C Pointers Language Lawyer Undefined Behavior

What is 'forward declaration' and the difference between 'typedef struct X' and 'struct X'?

C Struct Typedef

What's the meaning of the %m formatting specifier?

C Printf Glibc Errno Format Specifiers

What is the meaning of `struct X typedef` vs. `typedef struct X`?

C++C Struct Visual Studio-2010

Is it mandatory to escape tabulator characters in C and C++?

How to printf a memory address in C

C Pointers Printf Memory Address Unary Operator

Determining to which function a pointer is pointing in C?

C Function Pointers

"register" keyword in C?

C Memory Keyword

Wrapping a C library in Python: C, Cython or ctypes?

Python C Ctypes Cython

Why does glibc's strlen need to be so complicated to run quickly?

C Optimization Glibc Portability Strlen

Does the C standard permit assigning an arbitrary value to a pointer and incrementing it?

C Pointers Language Lawyer Pointer Arithmetic

How to implement continuations?

C Lisp Scheme Continuations

Getting absolute path of a file

C Unix Path Filesystems Absolute

Waitpid equivalent with timeout?

Set local environment variables in C++

building a .so that is also an executable

C Linux Shared Libraries Glibc Dlopen

Technical reasons behind formatting when incrementing by 1 in a 'for' loop?

Java C#C++C For Loop

Recommendations for C Profilers?

C Profiling Profiler

What do C and Assembler actually compile to?

C++C Compiler Construction Linker Assembly

Linker error: "linker input file unused because linking not done", undefined reference to a function in that file

C++C Gcc Makefile Linker Errors

How can I get GDB to tell me what address caused a segfault?

What is the correct type for array indexes in C?

C Types Indexing C99

Anonymous union within struct not in c99?

C Gcc Struct C99 Unions

Fastest JSON reader/writer for C++

How to replicate vector in c?

Producing optimised NDK code for multiple architectures?

Android C Gcc Java Native-Interface Android Ndk

How do I determine the size of my array in C?

C Arrays Memory

Purpose of Unions in C and C++

C++C Unions Type Punning

What's the rationale for null terminated strings?

C++C String Null Terminated

Compiler warning - suggest parentheses around assignment used as truth value

C Compiler Construction Compiler Warnings

Visual Studio debugger error: Unable to start program Specified file cannot be found

C++C Visual Studio-2010 Debugging Visual C++

What is the difference between prefix and postfix operators?

C Postfix Operator Prefix Operator

Why does getpid() return pid_t instead of int?

C Pid Type Equivalence

Proper way to empty a C-String

C String Strcpy

Type of #define variables

C C Preprocessor

Reasons to use (or not) stdint

What's meaning of "EXPORT_SYMBOL" in Linux kernel code?

Writing robust (color and size invariant) circle detection with OpenCV (based on Hough transform or other features)

C++Python C Opencv Computer Vision

Arrow Operator vs. Dot Operator

C Pointers Structure

How do I print uint32_t and uint16_t variables' value?

Does C have a string type?

C String Char Printf Strcpy

error: warning: incompatible implicit declaration of built-in function ‘memcpy’ [enabled by default]

function declared static but never defined

Write-Only pointer type

C++C Pointers Readonly Const Correctness

Why is it safer to use sizeof(*pointer) in malloc

How can I measure CPU time and wall clock time on both Linux/Windows?

C++C Performance Time Cpu

What's the difference between sockaddr, sockaddr_in, and sockaddr_in6?

C++C Api Network Programming

What is the correct printf specifier for printing pid_t

C Io Printf Pid

How to write a simple Linux device driver?

C Linux Linux Kernel Linux Device-Driver Embedded Linux

Using GCC to produce readable assembly?

munmap_chunk(): invalid pointer

How does this float square root approximation work?

C++C Optimization Floating Point Ieee 754

Is recent GTK 3.22 still Boehm GC friendly (thread issue)?

C Linux Multithreading Gtk Boehm Gc

Why create an include/ directory in C and C++ projects?

C vs C++ compilation incompatibility - does not name a type

Generate compiler warning if const char* array initialization comma is missing

C Initialization

Increasing camera capture resolution in OpenCV

C Image Opencv Webcam Resolutions

Difference between Enum and Define Statements

C++C Enums C Preprocessor

Good tools for creating a C/C++ parser/analyzer

C++C Parsing Yacc Lex

How to test a static function

sizeof a union in C/C++

C++C Sizeof Unions

How to compare ends of strings in C?

How do you call Python code from C code?

Python C Interop Cross Domain

zero size malloc

fast algorithm for drawing filled circles?

C Algorithm Graphics Geometry

How can I see symbols of (C and C++) binary on linux?

C++C Performance Profiling Name Mangling

What is the >>>= operator in C?

C Obfuscation Literals Bit Shift Digraphs

malloc vs mmap in C

Does the restrict keyword provide significant benefits in gcc/g++?

C++C Gcc G++Restrict Qualifier

concatenate char array in C

C String Arrays

How to define and work with an array of bits in C?

C Arrays Multidimensional Array Bit Manipulation Bitarray

What primitive data type is time_t?

C Types Printf Time T

If I do a `typedef` in C or C++, when should I add `_t` at the end of typedef'ed type?

What is the difference between static and extern in C?

how to declare variable type, C style in python

Python C Variables

Why C-forkbombs don't work like bash ones?

C++C Linux Bash Fork

Is C/C++ bool type always guaranteed to be 0 or 1 when typecast'ed to int?

assert() with message

C Gcc Compiler Warnings Assert

C string append

Where can I find an official reference listing the operation of SSE intrinsic functions?

C++C Gcc Sse Simd

Including a header file from another directory

C Compiler Errors Include C Preprocessor

What does y -= m < 3 mean?

Use of cudamalloc(). Why the double pointer?

Does gcc define anything when -g is specified?

C Debugging Gcc C Preprocessor

Purpose of LDA argument in BLAS dgemm?

What is the difference between str==NULL and str[0]=='\0' in C?

C Pointers Gcc Cstring

Why does C need "struct" keyword and not C++?

C++C Compiler Construction

atoi — how to identify the difference between zero and error?

how to assign multiple values into a struct at once?

Where does the value of CXX in a makefile come from?

Using C Libraries for C++ Programs

Difference between angle bracket < > and double quotes " " while including header files in C++?

Is &errno legal C?

C Language Lawyer Errno

Fortran vs C++, does Fortran still hold any advantage in numerical analysis these days?

C++C Cuda Fortran

Understanding the difference between f() and f(void) in C and C++ once and for all

C++C Function Void

What does AND 0xFF do?

C Bit Manipulation Bitwise Operators Bit Shift

Is there a way to mark a chunk of allocated memory readonly?

C++C Memory Management Malloc Heap Corruption

What does it mean to write to stdout in C?

Is there a document describing how Clang handles excess floating-point precision?

C Floating Point Clang C99 Extended Precision

What does this expression mean, and why does it compile?

getc() vs fgetc() - What are the major differences?

unsigned long long type printing in hexadecimal format

C Integer Printf

I do not understand how execlp() works in Linux

Difference between np.int, np.int_, int, and np.int_t in cython?

Python C Numpy Cython

Why is writing to memory much slower than reading it?

C Performance Memory Hardware

What does the first "c" stand for in "calloc"?

C Malloc Libc Calloc C Standard-Library

Why is gcc allowed to speculatively load from a struct?

C Gcc Assembly X86 Compiler Optimization

What's the meaning of "reserved for any use"?

C++C Language Lawyer C Standard-Library

Difference between i++ and (i)++ in C

C Language Lawyer Increment Evaluation

Absolute value abs(x) using bitwise operators and Boolean logic

C++C Bit Manipulation Language Lawyer Absolute Value

Why does this .c file #include itself?

C C Preprocessor

What is the best free memory leak detector for a C/C++ program and its plug-in DLLs?

C++C Visual Studio Memory Leaks

Octal number literals: When? Why? Ever?

What does this error mean: "error: expected specifier-qualifier-list before 'type_name'"?

C++C Pointers Struct

How to convert C++ Code to C

C++C Code Translation

Stack allocation, padding, and alignment

C Gcc Assembly X86 Stack

In C - check if a char exists in a char array

C Arrays String Char

Are all data pointers the same size in one platform for all data types?

C Pointers Types

C/C++, can you #include a file into a string literal?

C++C Include C Preprocessor String Literals

Why use Macros in C?

What does double underscore ( __const) mean in C?

C Syntax Double Underscore

Check double variable if it contains an integer, and not floating point

C++C Floating Point

Why is scanf() causing infinite loop in this code?

C Programming: Forward variable argument list

C Variables Arguments Printf Forward

Remove spaces from a string in C

C String Spaces

How can I do a CPU cache flush in x86 Windows?

C Windows X86 Cpu Cpu Cache

Should one really set pointers to `NULL` after freeing them?

C Pointers Free

C structure and C++ structure

GCC style weak linking in Visual Studio?

C++C Visual Studio Gcc Weak Linking

Extra leading zeros when printing float using printf?

C++C Floating Point Formatting Printf

How to format a function pointer?

C Function Pointers

Embed Text File in a Resource in a native Windows Application

C++C Winapi Resources Text Files

Should you always use 'int' for numbers in C, even if they are non-negative?

`getchar()` gives the same output as the input string

How to increase performance of memcpy

C Visual Studio Memcpy Cvi Memory Bandwidth

Are global variables bad?

C++C Global Variables

How to count the number of arguments passed to a function that accepts a variable number of arguments?

C Variadic Functions

printf string, variable length item

C Format Printf

What is __i686.get_pc_thunk.bx? Why do we need this call?

C Assembly Shared Libraries Glibc

In C/C++, is there a directive similar to #ifndef for typedefs?

Using WinRT from C?

C Visual Studio Winapi Windows Runtime

Repeated typedefs - invalid in C but valid in C++?

C++C Typedef Language Lawyer

What is the difference between ssize_t and ptrdiff_t?

Which is the best way to get input from user in C?

Warning: array subscript has type char

Double precision - decimal places

C++C Precision Ieee 754

Braces around string literal in char array declaration valid? (e.g. char s[] = {"Hello World"})

C++C String Arrays Array Initialization

How to get "printf" messages written in NDK application?

Android C Android Ndk Java Native-Interface Logging

error: function returns address of local variable

C Return Strcpy Strcat

C char* to int conversion

Memset Definition and use

How to read, understand, analyze, and debug a Linux kernel panic?

C Linux Debugging Linux Kernel Panic

What does #x inside a C macro mean?

Usage of \b and \r in C

My char pointer points to invalid value after being cast from int*

C Arrays Pointers

What is -ffreestanding option in gcc?

C Gcc Compilation Freestanding

Why does the string returned by ctime() contain a line feed?

C++C String Time Std

Write applications in C or C++ for Android?

Is bool a native C type?

C Gcc Linux Kernel Boolean

.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx

C++C Filenames Header Files Naming

How to use hardware acceleration with ffmpeg

C++C Ffmpeg Hardware Acceleration

For { A=a; B=b; }, will "A=a" be strictly executed before "B=b"?

C++C Optimization Compiler Construction Standards

fatal error: mpi.h: No such file or directory #include <mpi.h>

C++C Mpi Openmpi

Memory Leak Detectors Working Principle

C++C Memory Leaks

Getting bool from C to C++ and back

Why doesn't GCC optimize structs?

C Optimization Gcc Struct

Your preferred C/C++ header policy for big projects?

C++C Coding Style Include Header

How to link using GCC without -l nor hardcoding path for a library that does not follow the libNAME.so naming convention?

C++C Gcc Linker Shared Libraries

Output single character in C

C Character String Formatting

XML Parser for C

Are prototypes required for all functions in C89, C90 or C99?

Material to learn GObject and Glib

C Gstreamer Gnome Glib Gobject

How to correctly use the extern keyword in C

Number of elements in an enum

Bitfield manipulation in C

C Bit Manipulation

Why is a while loop needed around pthread wait conditions?

C Multithreading Pthreads

What is activation record in the context of C and C++?

Getting started with Intel x86 SSE SIMD instructions

C Gcc X86 Sse Simd

Difference between LPVOID and void*

Cross Platform C library for GUI Apps?

C User Interface Qt Graphics Cross Platform

Why are drivers and firmwares almost always written in C or ASM and not C++?

How do I measure a time interval in C?

Which macro to wrap Mac OS X specific code in C/C++

C++C Xcode Macos Macros

how to exit a child process - _exit() vs. exit

What can you do in C without "std" includes? Are they part of "C," or just libraries?

ISO/IEC Website and Charging for C and C++ Standards

C++C Standards Iso

Is the C programming language object-oriented?

C Oop Standards

How to use netlink socket to communicate with a kernel module?

C Linux Kernel Linux Device-Driver Netlink

How do I measure time in C?

C Windows Winapi Time

Why does left shift operation invoke Undefined Behaviour when the left side operand has negative value?

C++C Language Lawyer Undefined Behavior Bit Shift

What are the differences between a compiler and a linker?

C Compiler Construction Linker Terminology

Determining sprintf buffer size - what's the standard?

C complex number and printf

C Printf Complex Numbers

After forking, are global variables shared?

C Linux Unix Fork

Associative arrays in C

C Arrays Associative Array Dongle

Can the linker inline functions?

C Optimization Linker Inline

Why is a pthread mutex considered "slower" than a futex?

C Linux Pthreads Futex

Is memset() more efficient than for loop in C?

C Performance Memset

How to create a C compiler for custom CPU?

C Compiler Construction Customization

How to draw text using only OpenGL methods?

C++C Opengl Graphics

What does the question mark and the colon (?: ternary operator) mean in objective-c?

Objective C C Syntax Operators Conditional Operator

How to prevent SIGPIPEs (or handle them properly)

C Io Signals Broken Pipe Sigpipe

Check if process exists given its pid

forward declaration of a struct in C?

C Struct Declaration Forward Declaration

Operation on ... may be undefined?

C Undefined Behavior

Are char * argv[] arguments in main null terminated?

C Argv Null Terminated

Writing a Python extension in Go (Golang)

Python C Go Cython

difference between <stdlib.h> and <malloc.h>

Is this ->> an old operator or a typo/error?

C++C Operators History

what is the reason for explicitly declaring L or UL for long values

What is "!!" in C?

C Gcc Boolean Boolean Expression

Correct printf format specifier for size_t: %zu or %Iu?

C++C Visual Studio-2010 Printf Format Specifiers

Buffer overflow works in gdb but not without it

C Security Buffer Overflow Fortify Source Memory Safety

What is "..." in switch-case in C code

C Gcc Gcc Extensions

How to render text in SDL2?

C empty struct -- what does this mean/do?

What do pty and tty mean?

C Unix Networking Tty Vocabulary

How to define an enumerated type (enum) in C?

How does C compute sin() and other math functions?

C Math Trigonometry

Once upon a time, when > was faster than < ... Wait, what?

C Optimization Opengl Cpu Gpu

how to use cURL on specific interface

Different Pointer Arithmetic Results when Taking Address of Array

C Pointers Language Lawyer

How does fork() know when to return 0?

C Unix Process Fork Internals

What does a && operator do when there is no left side in C?

C Gcc Goto Language Extension

Does sscanf("123456789123456789123456789", "%d", &n) have defined behavior?

C Scanf Undefined Behavior

What causes a char to be signed or unsigned when using gcc?

Nonintuitive result of the assignment of a double precision number to an int variable in C

C Floating Point Type Conversion Implicit Conversion

If the size of "long" and "int" are the same on a platform - are "long" and "int" different in any way?

C Types Integer Representation

Why is the gets function so dangerous that it should not be used?

C Fgets Buffer Overflow Gets

Why malloc+memset is slower than calloc?

The most efficient way to implement an integer based power function pow(int, int)

C Algorithm Math Exponentiation

How do I get the directory that a program is running from?

C++C Working Directory

how to use #ifdef with an OR condition?

How to achieve function overloading in C?

How can I autoformat/indent C code in vim?

C Vim Code Formatting

How to disable GCC warnings for a few lines of code

C Gcc Compiler Warnings Pragma

Structure padding and packing

C Struct Structure Padding Packing

Why do we need C Unions?

What is the "assert" function?

What does opening a file actually do?

What's the difference between __PRETTY_FUNCTION, FUNCTION, func__?

C++C Compiler Construction Standards

Is there a difference between foo(void) and foo() in C++ or C?

How to know what the 'errno' means?

How to avoid "if" chains?

C++C If Statement Control Flow

Is there a Java equivalent or methodology for the typedef keyword in C++?

Java C++C Design Patterns Typedef

#pragma pack effect

C C Preprocessor Pragma Pack

What are the differences between .so and .dylib on macOS?

C++C Macos Unix

How do I use extern to share variables between source files?

C Global Variables Extern

uint8_t vs unsigned char

Is 'switch' faster than 'if'?

C Performance Switch Statement Assembly Jump Table

What is the difference between char array and char pointer in C?

C Arrays Pointers

Significance of ios_base::sync_with_stdio(false); cin.tie(NULL);

Difference between fprintf, printf and sprintf?

C Io Stream Printf

Modulo operation with negative numbers

C Gcc Modulo Negative Number

How do I check OS with a preprocessor directive?

C Operating System C Preprocessor Conditional Compilation

Understanding typedefs for function pointers in C

C Function Pointers Typedef

What is the behavior of integer division?

C Math C99 C89 Integer Division

What does {0} mean when initializing an object?

Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C

C Algorithm Bit Manipulation

What is Bit Masking?

C Bit Manipulation Bitwise Operators Terminology Bitmask

What is exactly the base pointer and stack pointer? To what do they point?

C Assembly X86 Stack Frame Stack Pointer

size_t vs. uintptr_t

C Pointers Size T

warning: implicit declaration of function

C Compiler Warnings

C fopen vs open

C Linux File Io Fopen

How to initialize all members of an array to the same value?

C Arrays Initialization Array Initialize

Why does the C preprocessor interpret the word "linux" as the constant "1"?

C Linux Gcc C Preprocessor

What is the difference between ++i and i++?

C For Loop Post Increment Pre Increment

Execution time of C program

Why is 0 < -0x80000000?

C Signed Numeric Limits Numeric Conversion

Why does GCC use multiplication by a strange number in implementing integer division?

C Gcc Assembly X86 64 Integer Division

How can I suppress "unused parameter" warnings in C?

C Gcc Gcc Warning

Is it better to use C void arguments "void foo(void)" or not "void foo()"?

Is the sizeof(some pointer) always equal to four?

C++C Pointers Memory Sizeof

Rounding up to next power of 2

C Optimization Bit Manipulation

static const vs #define

Single quotes vs. double quotes in C or C++

C++C Syntax Char String Literals

Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

C++C Undefined Behavior Integer Overflow

How do I restrict a float value to only two places after the decimal point in C?

C Floating Point Decimal

#define macro for debug printing in C?

C C Preprocessor

How do you compare structs for equality in C?

C Struct Equality

Why does this for loop exit on some platforms and not on others?

C Debugging Undefined Behavior Buffer Overflow

Is an array name a pointer?

C Arrays Pointers

C read file line by line

C File Io Line Libc

typedef fixed length array

C Arrays Gcc Typedef

printf() formatting for hexadecimal

What is the Difference Between read() and recv() , and Between send() and write()?

C Sockets Unix Network Programming Posix

Passing by reference in C

C Pointers Pass by-Reference

What exactly is a reentrant function?

C++C Recursion Thread Safety Reentrancy

Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?

C++C Function Pointers

Correct format specifier to print pointer or address?

C Pointers Format Memory Address

Are memory leaks ever ok?

C++C Memory Leaks

What is the difference between AF_INET and PF_INET in socket programming?

C Linux Sockets

When to use inline function and when not to use it?

Interview question: Check if one string is a rotation of other string

Why is the asterisk before the variable name, rather than after the type?

C Pointers Variables Naming Conventions

close vs shutdown socket?

C Sockets Networking

Difference between char* and const char*?

C Pointers Constants

How dangerous is it to access an array out of bounds?

C Arrays Memory

How to initialize array to 0 in C?

C Arrays Initialization

Obfuscated C Code Contest 2006. Please explain sykes2.c

C Obfuscation Deobfuscation

What is the difference between a definition and a declaration?

C Declaration Terminology Definition C++ Faq

How to make child process die after parent exits?

C Linux Unix Process Fork

Why is conversion from string constant to 'char*' valid in C but invalid in C++

C++C String C++11 Char

Differences between fork and exec

C Unix Fork Exec

Constant pointer vs Pointer to constant

C Pointers Constants

Why is C so fast, and why aren't other languages as fast or faster?

How do I properly compare strings in C?

C String Strcmp

Post-increment and pre-increment within a 'for' loop produce same output

C++C For Loop Operator Precedence

What does the brk() system call do?

C Linux Unix Memory Management Brk

Finding current executable's path without /proc/self/exe

C++C Linux Macos Executable

Do I need to explicitly handle negative numbers or zero when summing squared digits?

Forward an invocation of a variadic function in C

typedef struct vs struct definitions

C Struct Typedef

Overloading Macro on Number of Arguments

C Macros C Preprocessor

What do the parentheses around a function name mean?

C Function Parentheses

How come an array's address is equal to its value in C?

C Pointers Arrays

Error "initializer element is not constant" when trying to initialize variable with const

C Initialization

How do I see a C/C++ source file after preprocessing in Visual Studio?

C++C Debugging Visual Studio-2005 C Preprocessor

How to make a variadic macro (variable number of arguments)

C G++C Preprocessor Variadic

Capture characters from standard input without waiting for enter to be pressed

C++C Inputstream

What is time_t ultimately a typedef to?

return statement vs exit() in main()

C++C Coding Style Return Exit

Can I use a binary literal in C or C++?

Protecting executable from reverse engineering?

C++C Obfuscation Assembly

Why aren't programs written in Assembly more often?

C Programming Languages Assembly

What exactly is a C pointer if not a memory address?

C Pointers Memory Address

What is the difference between conversion specifiers %i and %d in formatted IO functions (printf / scanf)

C++C Printf Scanf Format Specifiers

Realistic usage of the C99 'restrict' keyword?

C Gcc C99 Restrict Qualifier

Unit Testing C Code

C Unit Testing Testing Embedded

What is the strict aliasing rule?

C++C Undefined Behavior Strict Aliasing Type Punning

Pointer arithmetic for void pointer in C

C Void Pointers Pointer Arithmetic

Check substring exists in a string in C

Is there a good Valgrind substitute for Windows?

C Windows Debugging Memory Leaks Valgrind

C multi-line macro: do/while(0) vs scope block

C Macros Multiline

Return a `struct` from a function in C

Valid, but worthless syntax in switch-case?

C Switch Statement Language Lawyer

Is assert evil?

C++C Error Handling Go Assert

Is there a replacement for unistd.h for Windows (Visual C)?

C++C Windows Portability unistd.h

How are multi-dimensional arrays formatted in memory?

C Arrays Memory Data Structures Stack Memory

Determine the line of code that causes a segmentation fault?

C++C Debugging Segmentation Fault

Creating your own header file in C

C Header Include Include Guards C Header

Effects of the extern keyword on C functions

C Syntax Standards

Work on a remote project with Eclipse via SSH

C Eclipse Ssh Eclipse Cdt Remote Debugging

Where are static variables stored in C and C++?

C++C Compiler Construction

Is errno thread-safe?

C Linux Multithreading Gcc

Where does gcc look for C and C++ header files?

How to add a 'or' condition in #ifdef

C++C C Preprocessor

Is the size of C "int" 2 bytes or 4 bytes?

What is the difference between printf() and puts() in C?

C String Output Printf Puts

C state-machine design

C++C Architecture State Machine

Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop?

Objective-C : BOOL vs bool

C Objective C Types Boolean

Why do pthreads’ condition variable functions require a mutex?

C Pthreads Mutex Condition Variable

Convert Python program to C/C++ code?

C++Python C Code Generation

How to get the current directory in a C program?

C Unix Working Directory

Mutex example / tutorial?

C++C Multithreading Synchronization Mutex

Build .so file from .c file using gcc command line

C Linux Gcc Shared Libraries

Improve INSERT-per-second performance of SQLite

C Performance Sqlite Optimization

Why are these constructs using pre and post-increment undefined behavior?

C Increment Undefined Behavior Operator Precedence Sequence Points

Why use apparently meaningless do-while and if-else statements in macros?

C++C C Preprocessor C++ Faq

Difference between malloc and calloc?

C Malloc Calloc

It is more efficient to use if-return-return or if-else-return?

Python C Performance Compiler Construction

Switch statement: must default be the last case?

C Switch Statement

How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?

C Linux Unix File Posix

What is &&& operation in C

C++C Operators Compiler Optimization Gcc Warning

How are GCC and g++ bootstrapped?

C++C Compiler Construction

Is inline assembly language slower than native C++ code?

C++C Performance Assembly

C isn't that hard: void ( ( f[] ) () ) ()

C Parsing Pointers Function Pointers Void Pointers

What does the comma operator , do?

C Operators Comma Operator

How do I trim leading/trailing whitespace in a standard way?

C String Whitespace Trim

What's the difference between size_t and int in C++?

Regular expressions in C: examples?

maximum value of int

C++C Stl Limits Numeric Limits

What is the fastest substring search algorithm?

C Algorithm String Substring

How do I check if an integer is even or odd?

How can I use an array of function pointers?

C Initialization Function Pointers

What is the C runtime library?

Where in memory are my variables stored in C?

C Memory Memory Management Types

How do pointer-to-pointers work in C? (and when might you use them?)

FILE macro shows full path

C File Macros Path

How to convert integer to string in C?

C String Integer Type Conversion

Programmatically get the cache line size?

C++C Caching Operating System Systems Programming

Returning an array using C

C Arrays Pointers Char

Catch Ctrl-C in C

Why does scanf() need "%lf" for doubles, when printf() is okay with just "%f"?

C Scanf Length Modifiers

What's the difference between “mod” and “remainder”?

C Math Operators

What are the differences between poll and select?

Split string with delimiters in C

fork() branches more than expected?

How do you reverse a string in place in C or C++?

C++C String Reverse

Why does GCC generate such radically different assembly for nearly the same C code?

C Gcc Assembly X86 Compiler Optimization

Can't compile C program on a Mac after upgrade to Mojave

C Macos Gcc Terminal

Is gcc's attribute((packed)) / #pragma pack unsafe?

C Gcc Pragma Pack

In CMake, how can I test if the compiler is Clang?

C++C Cmake Clang

Using boolean values in C

What is the idiomatic way in CMAKE to add the -fPIC compiler option?

Checking for NULL pointer in C/C++

C++C If Statement Null Coding Style

Why is it considered a bad practice to omit curly braces?

Java C#C++C Coding Style

How do I define and use an ENUM in Objective-C?

Iphone Objective C C

Clang vs GCC for my Linux Development project

C++C Linux Gcc Clang

Tool to track #include dependencies

Is there an alternative sleep function in C to milliseconds?

memcpy() vs memmove()

C Memcpy Memmove

What does (x ^ 0x1) != 0 mean?

C++C Bit Manipulation Bitmask

What does "Memory allocated at compile time" really mean?

C++C Memory Memory Management Terminology

How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals "hello"?

C Debugging Gdb Conditional Breakpoint

What does void* mean and how to use it?

Is char signed or unsigned by default?

C Types Char Signed

Is "for(;;)" faster than "while (true)"? If not, why do people use it?

C++C Optimization Readability Infinite Loop

Why isn't sizeof for a struct equal to the sum of sizeof of each member?

C++C Struct Sizeof C++ Faq

What should main() return in C and C++?

C++C Return Value Main Return Type

Warning/error "function declaration isn't a prototype"

Setting variable to NULL after free

C Coding Style Malloc Free Heap Memory

String literals: Where do they go?

C Memory String Literals

What do people find difficult about C pointers?

What does "#define _GNU_SOURCE" imply?

What's an object file in C?

C Compilation Linker Object Files

Fastest method of screen capturing on Windows

static function in C

Why use bzero over memset?

C Memset Systems Programming

Are there any downsides to passing structs by value in C, rather than passing a pointer?

C Struct Parameter Passing Abi

What is the worst real-world macros/pre-processor abuse you've ever come across?

C++C Macros Preprocessor

What does void mean in C, C++, and C#?

C#C++C Language Design Terminology

Why does flowing off the end of a non-void function without returning a value not produce a compiler error?

How does this code generate the map of India?

What's this =! operator?

What are the most common naming conventions in C?

C Naming Conventions

Why is volatile not considered useful in multithreaded C or C++ programming?

C++C Multithreading Volatile C++ Faq

What is a segmentation fault?

C++C Segmentation Fault

Const before or const after?

C++C Syntax Constants

How to make clang compile to llvm IR

C Clang Llvm Bitcode

What does i = (i, ++i, 1) + 1; do?

C Operators Expression Compiler Warnings Comma Operator

How to use the C socket API in C++ on z/OS

C++C Sockets Mainframe Zos

Error handling in C code

C Error Handling

Still Reachable Leak detected by Valgrind

C Pthreads Valgrind

Does bit-shift depend on endianness?

A fast method to round a double to a 32-bit int explained

C++C Performance Floating Point

Can num++ be atomic for 'int num'?

C++C Multithreading Assembly Atomic

Object-orientation in C

How does Duff's device work?

How to get the error message from the error code returned by GetLastError()?

Get a substring of a char*

C Char Substring

Incompatible implicit declaration of built-in function ‘malloc’

C Struct Malloc

Why does the indexing start with zero in 'C'?

What is the advantage of GCC's __builtin_expect in if else statements?

C Linux Gcc Built In Likely Unlikely

In C++, am I paying for what I am not eating?

How can I concatenate twice with the C preprocessor and expand a macro as in "arg ## _ ## MACRO"?

C Concatenation Token C Preprocessor

What is the relation between BLAS, LAPACK and ATLAS

C Lapack Blas Atlas

warning: incompatible implicit declaration of built-in function ‘xyz’

C Gcc Gcc Warning

How do you pass a function as a parameter in C?

C Function Pointers Syntax Parameters

What is size_t in C?

Why do I get this particular color pattern when using rand()?

What is a "callback" in C and how are they implemented?

What are the useful GCC flags for C?

C Gcc Compiler Flags

What is the purpose of static keyword in array parameter of function like "char s[static 10]"?

C Arrays Parameters Static

What are the GCC default include directories?

C++C Linux Gcc Include Path

In C, why do some people cast the pointer before freeing it?

C Pointers Casting

What is __stdcall?

C Winapi Calling Convention Stdcall

How can I remove a flag in C?

C Bit Manipulation Flags

Exotic architectures the standards committees care about

C++C Architecture

Why prefer start + (end - start) / 2 over (start + end) / 2 when calculating the middle of an array?

How to compile a static library in Linux?

C Gcc Static Libraries

Why does "The C Programming Language" book say I must cast malloc?

C Casting Malloc Kernighan and-Ritchie

How do I concatenate two strings in C?

Why have i++; i--; right after each other?

Is D a credible alternative to Java and C++?

How can I compile and run C/C++ code in a Unix console or Mac terminal?

C++C Macos Console Terminal

C: Run a System Command and Get Output?

How do you allow spaces to be entered using scanf?

C String Printf Scanf Whitespace

Assign one struct to another in C

Write to .txt file?

Significance of -pthread flag when compiling

C++C Linux Pthreads

Why does reading into a string buffer with scanf work both with and without the ampersand (&)?

Why does pthread_cond_wait have spurious wakeups?

Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?

C Linux Time Linux Kernel

Why does the smallest int, −2147483648, have type 'long'?

How I can print to stderr in C?

C Printf Stderr

Is short-circuiting logical operators mandated? And evaluation order?

C++C Logical Operators Short Circuiting Operator Precedence

Difference between signed / unsigned char

C Types Unsigned

What tools are there for functional programming in C?

C Functional Programming

How do you implement a class in C?

C Class Oop Embedded

_DEBUG vs NDEBUG

C dynamically growing array

C Dynamic Arrays

Standard alternative to GCC's ##__VA_ARGS__ trick?

C C99 C Preprocessor Variadic Macros

Are the shift operators (<<, >>) arithmetic or logical in C?

C Binary Bit Manipulation Bit Shift

What is the purpose of using -pedantic in the GCC/G++ compiler?

print call stack in C or C++

C++C Linux Callstack

How to avoid overflow in expr. A * B - C * D

C++C Integer Overflow

Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?

How can I get the list of files in a directory using C or C++?

C++C File Directory

Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell

Python C Performance Haskell Erlang

Why is the alphabet split into multiple ranges in this C code?

C++C Character Toupper

How do I find the location of the executable in C?

C++C Linux Unix Path

How to convert an enum type variable to a string?

C++C Preprocessor Ansi C

bool to int conversion

What happens to a declared, uninitialized variable in C? Does it have a value?

C Initialization Declaration

How to understand Locality Sensitive Hashing?

C Machine Learning Hashmap Nearest Neighbor Locality Sensitive-Hash

Where is the itoa function in Linux?

How should I print types like off_t and size_t?

C Portability Format Specifiers

C/C++ macro string concatenation

C++C C Preprocessor

Call Go functions from C

C Shared Libraries Go Dynamic Linking

How to open, read, and write from serial port in C?

C Linux Serial Port

How do you determine the size of a file in C?

C File Io Filesize

C: differences between char pointer and array

C Arrays Pointers

In C, do braces act as a stack frame?

hash function for string

C Algorithm Hash Dictionary Hashtable

makefile:4: *** missing separator. Stop

How do I detect unsigned integer overflow?

C++C Integer Overflow

NSLog the method name with Objective-C in iPhone

Objective C C Iphone Debugging

What is the meaning of "attribute((packed, aligned(4))) "

A free tool to check C/C++ source code against a set of coding standards?

C++C Coding Style

'float' vs. 'double' precision

C Floating Point

Is it safe to parse a /proc/ file?

C++C Linux Unix Procfs

Should I return EXIT_SUCCESS or 0 from main()?

C++C Return Value Main

Why is the .bss segment required?

C Linux Compiler Construction

How to display a dynamically allocated array in the Visual Studio debugger?

C++C Visual Studio Debugging

What's the point of const pointers?

C++C Pointers Constants

difference between #if defined(WIN32) and #ifdef(WIN32)

Is there a way to specify how many characters of a string to print out using printf()?

What does dot (.) mean in a struct initializer?

C C99 Designated Initializer

constant pointer vs pointer on a constant value

C Pointers Constants

~x + ~y == ~(x + y) is always false?

C Bit Manipulation Signed Twos Complement

DESTDIR and PREFIX of make

C Linux Bash Makefile Configure

Can code that is valid in both C and C++ produce different behavior when compiled in each language?

Divide a number by 3 without using *, /, +, -, % operators

C Math Division Divide

How to determine CPU and memory consumption from inside a process

C++C Memory Cpu

Why doesn't this memory eater really eat memory?

C Linux Memory Virtual Memory

What is the difference between sigaction and signal?

C Signals Posix

How do I base64 encode (decode) in C?

What is the size of an enum in C?

What is the bit size of long on 64-bit Windows?

C++C Windows 64 Bit Porting

"#include" a text file in a C program as a char[]

C Include C Preprocessor

Quick Way to Implement Dictionary in C

C Data Structures Dictionary

How are everyday machines programmed?

C Operating System Microcontroller Embedded Assembly

What's the difference between "static" and "static inline" function?

What is the format specifier for unsigned short int?

socket connect() vs bind()

C Sockets Network Programming

Signed to unsigned conversion in C - is it always safe?

C Type Conversion

How large should my recv buffer be when calling recv in the socket library

C Sockets Buffer Recv

stdlib and colored output in C

C Colors Stdio Libc

What is the difference between C, C99, ANSI C and GNU C?

C Gcc C99 C89 Ansi C

error: Libtool library used but 'LIBTOOL' is undefined

C Linux Autotools Orientdb

Can a recursive function be inline?

C++C Compiler Construction

Why was the switch statement designed to need a break?

C Language Design

How does the C code that prints from 1 to 1000 without loops or conditional statements work?

C Function Pointers

How can mixed data types (int, float, char, etc) be stored in an array?

C Arrays Variant Mixed Type

Why is this code vulnerable to buffer overflow attacks?

C Security Buffer Overflow

Why would anybody use C over C++?

Why doesn't C have unsigned floats?

C Types Floating Point Format Unsigned

How can I tell gcc not to inline a function?

Declaring pointers; asterisk on the left or right of the space between the type and name?

Initializing a struct to 0

C Struct Initialization

How do you set, clear, and toggle a single bit?

C++C Bit Manipulation Bitwise Operators

What is the difference between #include <filename> and #include "filename"?

C++C Include Header Files C Preprocessor

Do I cast the result of malloc?

C Malloc Casting

self referential struct definition?

C Recursion Struct Typedef

What is the use of the %n format specifier in C?

C Printf Format String

Python (and Python C API): new versus init

Python C Python C-Api

What does "%.*s" mean in printf?

C Printf Format Specifiers

unix domain socket VS named pipes?

C Linux Named Pipes Unix Socket

What is the use of _start() in C?

What is the closest thing Windows has to fork()?

C++C Windows Fork

C pointers : pointing to an array of fixed size

C Pointers Size

What platforms have something other than 8-bit char?

C++C Cross Platform

How to use shared memory with Linux in C

C Linux Fork Shared Memory

What do numbers using 0x notation mean?

C Integer Hex Notation

What is the proper #include for the function 'sleep()'?

What is the purpose of a single pound/hash sign (#) on its own line in the C/C++ preprocessor?

C++C Boost C Preprocessor

Can we write comments within variable names?

C Lexical Analysis

Is it feasible to compile Python to machine code?

Python C Linker Compilation

Is it safe to use -1 to set all bits to true?

C++C Binary Bit Fields

Using scanf() in C++ programs is faster than using cin?

C++C Performance Io

Convert objective-c typedef to its string equivalent

C Objective C Enums Typedef

What can be the reasons of connection refused errors?

C Sockets Connection Refused

Are negative array indexes allowed in C?

Why am I getting "undefined reference to sqrt" error even though I include math.h header?

C Linker Linker Errors Libm

what is Segmentation fault (core dumped)?

When would anyone use a union? Is it a remnant from the C-only days?

LLVM vs clang on OS X

C++C Gcc Llvm Clang

Why does C++ rand() seem to generate only numbers of the same order of magnitude?

C++C Math Random

Pointer expressions: ptr++, ++ptr and ++*ptr

C++C Pointers Increment

How do I make an infinite empty loop that won't be optimized away?

C Clang Language Lawyer Compiler Optimization

Bubble sort slower with -O3 than -O2 with GCC

C Gcc X86 64 Cpu Architecture Compiler Optimization

How to measure time in milliseconds using ANSI C?

C Portability Time Precision

When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

C++C Memory Memory Management

What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?

C Algorithm Optimization Bit Manipulation

Why write 1,000,000,000 as 100010001000 in C?

Objective C C Integer Literals

What is the purpose of an 'if (0)' block in if-else block?

how does array[100] = {0} set the entire array to 0?

C++C Compiler Construction

Static variable inside of a function in C

C char array initialization

C Arrays Char Initialization Buffer

How to call C from Swift?

What is the benefit of terminating if … else if constructs with an else clause?

C Misra Safety Critical

What is more efficient? Using pow to square or just multiply it with itself?

C++C Optimization

Why does ENOENT mean "No such file or directory"?

How to generate a random int in C?

Why are #ifndef and #define used in C++ header files?

C++C C Preprocessor

"static const" vs "#define" vs "enum"

Why is “while ( !feof (file) )” always wrong?

C File While Loop Eof Feof

How do I pass a command line argument while starting up GDB in Linux?

C Linux Debugging Gdb Command Line-Arguments

Difference between size_t and unsigned int?

C Types Unsigned

Pointer to pointer clarification

Is using an outdated C compiler a security risk?

Writing programs to cope with I/O errors causing lost writes on Linux

C Linux Linux Kernel Posix

Hidden features of C

C Hidden Features

Variable declaration placement in C

C Declaration C89

Left-pad printf with spaces

C Formatting Printf

Getting GDB to save a list of breakpoints

C++C Debugging Gdb Breakpoints

Where do I find the definition of size_t?

What happens if I define a 0-size array in C/C++?

How to explain C pointers (declaration vs. unary operators) to a beginner?

What can I use for input conversion instead of scanf?

What is the difference between exit() and abort()?

C++C Error Handling Exit Abort

How do I make a simple makefile for gcc on Linux?

C/C++ maximum stack size of program on mainstream OSes

C++C Operating System Stack Memory

Does free(ptr) where ptr is NULL corrupt memory?

C Pointers Memory Management Null Free

Are parallel calls to send/recv on the same socket valid?

C Networking Sockets

What's the point of malloc(0)?

Cast to int vs floor

C++C Floating Point

What does it mean for a data structure to be "intrusive"?

C++C Language Agnostic Data Structures Terminology

C/C++ NaN constant (literal)?

Printf width specifier to maintain precision of floating-point value

C Floating Point Printf C99 Floating Point-Precision

Why does C++11 not support designated initializer lists as C99?

C++C C++11 Initialization C99

Why is C++ initial allocation so much larger than C's?

C++C Benchmarking

Easiest way to flip a boolean value?

C++C Boolean Boolean Logic

const char* concatenation

C++C String Concatenation

Why does printf not flush after the call unless a newline is in the format string?

What does "dereferencing" a pointer mean?

C++C Pointers Dereference

Difference between static and shared libraries?

C++C Shared Libraries Static Libraries

How to work with complex numbers in C?

C Complex Numbers

How to remove unused C/C++ symbols with GCC and ld?

C++C Gcc Ld Strip

How to printf uint64_t? Fails with: "spurious trailing ‘%’ in format"

Why can't C functions be name-mangled?

C++C Name Mangling Extern C

Including one C source file in another?

C Include C Preprocessor Code Organization Project Organization

Detect if stdin is a terminal or pipe?

C++C Qt Pipe Stdin

Difference between CC, gcc and g++?

C++C Gcc Compilation

#include in .h or .c / .cpp?

What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?

Signal handling with multiple threads in Linux

C Linux Multithreading Signals Ipc

Why does "sizeof(a ? true : false)" give an output of four bytes?

C Boolean Sizeof Conditional Operator C11

What does 'const static' mean in C and C++?

Most tricky/useful commands for gdb debugger

C Unix Gdb Debugging Dbx

Are typedef and #define the same in c?

C Macros C Preprocessor Typedef

What's the difference between a file descriptor and file pointer?

C File Descriptor File Pointer

How can I throw an exception in C?

C Exception Syntax

Windows threading: _beginthread vs _beginthreadex vs CreateThread C++

C++C Multithreading Winapi

Position of least significant bit that is set

C++C Optimization Bit Manipulation

Python ? (conditional/ternary) operator for assignments

Python C Language Features

What is normalized UTF-8 all about?

Php C Unicode Unicode Normalization

Why are function pointers and data pointers incompatible in C/C++?

C++C Pointers Function Pointers

What's the meaning of exception code "EXC_I386_GPFLT"?

C++C Exc Bad-Access

What's the use of do while(0) when we define a macro?

C Macros Linux Kernel

FFmpeg C API documentation/tutorial

C Ffmpeg Documentation

"int main (vooid)"? How does that work?

GCC -g vs -g3 GDB Flag: What is the Difference?

C Debugging Gcc Gdb Clang

Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?

Can't understand this way to calculate the square of a number

C Arrays Pointers C99 Variable Length-Array

How does this piece of code determine array size without using sizeof( )?

C Arrays Size Language Lawyer Pointer Arithmetic

What is your favorite C programming trick?

What is the difference between memmove and memcpy?

C Memcpy Memmove

Is it faster to count down than it is to count up?

C Performance Loops

Why does integer overflow on x86 with GCC cause an infinite loop?

C++C Gcc X86 Undefined Behavior

Undefined reference to `pow' and `floor'

C Gcc Undefined Reference

What is the meaning of the term arena in relation to memory?

C++C Memory Management Terminology

Creating a daemon in Linux

In C/C++ what's the simplest way to reverse the order of bits in a byte?

C++C Bit Manipulation

Why doesn't c = a+++++b work in C?

What is a "static" function in C?

C Function Static Terminology

Undefined, unspecified and implementation-defined behavior

C++C Undefined Behavior Unspecified Behavior Implementation Defined-Behavior

What REALLY happens when you don't free after malloc before program termination?

How to pass macro definition from "make" command line arguments (-D) to C source code?

C Macros Makefile

Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?

C Performance Compiler Optimization

Concept of void pointer in C programming

C Void Pointers

How to prevent gcc optimizing some statements in C?

Why declare a struct that only contains an array in C?

C Arrays Coding Style Struct

Difference between int32, int, int32_t, int8 and int8_t

C Int Declaration

In release mode, code behavior is not as expected

C++C Optimization Visual Studio-2008 Compiler Bug

Creating C formatted strings (not printing them)

Passing command line arguments in Visual Studio 2010?

C Visual Studio-2010 Visual Studio Command Line-Arguments

Can gcc output C code after preprocessing?

C C Preprocessor Preprocessor Preprocessor Directive

Where is PATH_MAX defined in Linux?

C Linux Gcc Include Clang

How does the below program output `C89` when compiled in C89 mode and `C99` when compiled in C99 mode?

C Printf Comments C99 C89

Why is a simple loop optimized when the limit is 959 but not 960?

C Gcc Optimization Clang

Possible GCC bug when returning struct from a function

C Gcc Assembly X86 64 Compiler Bug

How to declare a structure in a header that is to be used by multiple files in c?

C File Header Structure

Inline functions vs Preprocessor macros

C++C Macros Inline

Returning a C string from a function

Which is faster: while(1) or while(2)?

C Performance While Loop

What is the printf format specifier for bool?

C++C Boolean Printf

How do I lowercase a string in C?

C String Lowercase

Turn a simple socket into an SSL socket

C Linux Sockets Unix Ssl

Parsing command-line arguments in C

C Command Line-Arguments

Try catch statements in C

What's the need of array with zero elements?

C Structure Flexible Array-Member

C compiler for Windows?

C Windows Compiler Construction

Should I learn C before learning C++?

Convert a character digit to the corresponding integer in C

C Type Conversion

Create a pointer to two-dimensional array

C Arrays Pointers

Set breakpoint in C or C++ code programmatically for gdb on Linux

Transform hexadecimal information to binary using a Linux command

C Command Command Line-Arguments Binaryfiles Hexdump

How do you make an array of structs in C?

C Arrays Struct

Why does Clang optimize away x * 1.0 but NOT x + 0.0?

C++C Optimization Floating Point Clang

Why does sizeof(my_arr)[0] compile and equal sizeof(my_arr[0])?

Is there a typical state machine implementation pattern?

C Design Patterns Finite Automata

'const int' vs. 'int const' as function parameters in C++ and C

How to read the content of a file to a string in C?

Build a simple HTTP server in C

Finding duplicates in O(n) time and O(1) space

":" (colon) in C struct - what does it mean?

Spinlock versus Semaphore

C++C Linux Unix Operating System

Use of #pragma in C

Avoid trailing zeroes in printf()

Should I use char** argv or char* argv[]?

C Arrays Pointers Standards

How does strtok() split the string into tokens in C?

C String Split Token Strtok

Difference between passing array and array pointer into function in C

C Arrays Function Parameter Passing Space Efficiency

How to do scanf for single char in C

Why does auto a=1; compile in C?

Quickly find whether a value is present in a C array?

C Optimization Assembly Embedded Arm

Is using if (0) to skip a case in a switch supposed to work?

C++C If Statement Switch Statement Language Lawyer

How do I fix "for loop initial declaration used outside C99 mode" GCC error?

What is the difference between vmalloc and kmalloc?

C Linux Kernel Kmalloc Vmalloc

Where is C not a subset of C++?

How do I get bit-by-bit data from an integer value in C?

C Bit Manipulation

How is a CRC32 checksum calculated?

C Checksum Crc32

Why is address zero used for the null pointer?

C++C Memory Pointers

C/C++ line number

C++C C Preprocessor Line Numbers Dynamic Compilation

How can one see content of stack with GDB?

make: Nothing to be done for `all'

Compile error: "g++: error trying to exec 'cc1plus': execvp: No such file or directory"

Php C++C Linux Gcc

How do you detect/avoid Memory leaks in your (Unmanaged) code?

C++C Memory Leaks

#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular sections of code?

C++C If Statement Coding Style C Preprocessor

Are there any open source C libraries with common data structures?

C Data Structures

Retrieve filename from file descriptor in C

C Linux File File Descriptor

C compile error: "Variable-sized object may not be initialized"

C Compiler Errors Initializer List Variable Length-Array

sizeof single struct member in C

C Struct Sizeof

How to tell where a header file is included from?

C++C Gcc Include G++

How exactly does tail recursion work?

C Algorithm Recursion Tail Recursion

Does C have a "foreach" loop construct?

What does -fPIC mean when building a shared library?

Rolling median algorithm in C

C Algorithm R Statistics Median

What is the difference between signed and unsigned int

C Unsigned Integer Signed Integer

GDB corrupted stack frame - How to debug?

C Recursion Gdb

Practical usage of setjmp and longjmp in C

Difference between ptr += 1 and ptr++ in C

C Pointers Post Increment

Why does rand() repeat numbers far more often on Linux than Mac?

C Linux Macos Random

What integer hash function are good that accepts an integer hash key?

C Algorithm Hash

Do threads have a distinct heap?

C Windows Linux Multithreading Stack

How many GCC optimization levels are there?

C Optimization Gcc Compiler Construction

Where is the C auto keyword used?

What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

C++C Cross Platform Portability

How is malloc() implemented internally?

C Memory Malloc System Calls Sbrk

Undefined reference to pow( ) in C, despite including math.h

Calling C/C++ from Python?

Fastest way to check if a file exists using standard C++/C++11,14,17/C?

C++C File Stream

C++ preprocessor __VA_ARGS__ number of arguments

C++C C Preprocessor Variadic Macros

Should struct definitions go in .h or .c file?

C Header Struct

Why does this code segfault on 64-bit architecture but work fine on 32-bit?

C Pointers Segmentation Fault

How to read a line from the console in C?

C Io Console Stdin

What would be C++ limitations compared C language?

Why cast unused return values to void?

Generate random numbers following a normal distribution in C/C++

C++C Random Distribution Normal Distribution

Linux: is there a read or recv from socket with timeout?

C Linux Sockets Tcp

Get the current time in C

C Time Time T Localtime

scanf() leaves the newline character in the buffer

How to break out of nested loops?

C Nested Loops Break

When should I use perror("...") and fprintf(stderr, "...")?

How far can memory leaks go?

C++C Memory Memory Leaks

Why do I get "a label can only be part of a statement and a declaration is not a statement" if I have a variable that is initialized after a label?

C/C++ check if one bit is set in, i.e. int variable

C++C Bit Manipulation

In C, how should I read a text file and print all strings

C File Text Files

Using printf with a non-null terminated string

C String Format Printf

Where to put include statements, header or source?

C Header Include

Redefining NULL

What does the ??!??! operator do in C?

C Operators Trigraphs

Comma in C/C++ macro

C++C Macros C Preprocessor

Why do we need argc while there is always a null at the end of argv?

C programming in Visual Studio

C Visual Studio

Declaring variables inside a switch statement

Objective C C Variables Switch Statement Declaration

Multiple arguments to function called by pthread_create()?

Coding Practices which enable the compiler/optimizer to make a faster program

C++C Performance Optimization

How to generate a random integer number from within a range

Is the "struct hack" technically undefined behavior?

C Undefined Behavior C89

CMake unable to determine linker language with C++

What does ## (double hash) do in a preprocessor directive?

C++C Concatenation C Preprocessor

C library function to perform sort

Is "argv[0] = name-of-executable" an accepted standard or just a common convention?

C++C Standards Argv

Color text in terminal applications in UNIX

C Unix Terminal

Can I call memcpy() and memmove() with "number of bytes" set to zero?

C++C Pointers Memcpy Memmove

Undefined reference to `sin`

C Math Linker Errors Undefined Reference

Printing hexadecimal characters in C

How to increment a pointer address and pointer's value?

How to declare strings in C

Reset C int array to zero : the fastest way?

C++C Arrays Memset

What is the argument for printf that formats a long?

C Printf Long Integer

How do I list the symbols in a .so file

C++C Gcc Symbols Name Mangling

Correct format specifier for double in printf

C Floating Point Printf Double Format Specifiers

Why are the fast integer types faster than the other integer types?

C++C Performance Types Int

C99 stdint.h header and MS Visual Studio

C++C Visual Studio C99

What should I do if two libraries provide a function with the same name generating a conflict?

C Conflict Name Collision

Creating C macro with ## and LINE (token concatenation with positioning macro)

C Macros Concatenation Token

What predefined macro can I use to detect clang?

C Macros Clang C Preprocessor

printf format specifiers for uint32_t and size_t

Is there a function to copy an array in C/C++?

C - function inside struct

C Function Struct

Freaky way of allocating two-dimensional array?

C Arrays Multidimensional Array Malloc Allocation

Why doesn't the compiler report a missing semicolon?

opengl: glFlush() vs. glFinish()

C++C Opengl Graphics

How to send a simple string between two programs using pipes?

Why main does not return 0 here?

C Linux Return Main

How to compile without warnings being treated as errors?

C Gcc Compiler Warnings

What is the difference between char s[] and char *s?

C String Char Constants

How to initialize a struct in accordance with C programming language standards

C Struct Initialization

Placement of the asterisk in pointer declarations

C++C Pointers Declaration

Using C++ library in C code

Best practices for circular shift (rotate) operations in C++

C++C Rotation Bit Manipulation C++ Faq

Indenting #defines

C C Preprocessor Indentation Code Formatting

Read/write files within a Linux kernel module

C File Io Linux Kernel Kernel Module

How can I tell if a library was compiled with -g?

C Debugging Gdb Debug Symbols

Using continue in a switch statement

C++C Switch Statement Break Continue

How to list files in a directory in a C program?

Is unsigned integer subtraction defined behavior?

C Standards Unsigned Integer Arithmetic

How to solve "ptrace operation not permitted" when trying to attach GDB to a process?

C Linux Debugging Gdb Strace

How to get thread id of a pthread in linux c program?

C Linux Pthreads

How are C data types “supported directly by most computers”?

clearing a char array c

How can I build a small operating system on an old desktop computer?

C Operating System Bootstrapping Osdev Assembly

Why do I get a warning every time I use malloc?

C Gcc Malloc Warnings Sizeof

How to reverse a singly linked list using only two pointers?

C Algorithm Data Structures Linked List Singly Linked-List

Macro definition to determine big endian or little endian machine?

C Architecture Macros C Preprocessor Endianness

Algorithm to convert RGB to HSV and HSV to RGB in range 0-255 for both

Which one will execute faster, if (flag==0) or if (0==flag)?

Are default enum values in C the same for all compilers?

unsigned int vs. size_t

Convert char to int in C and C++

Is ‘int main;’ a valid C/C++ program?

C++C Function Main Entry Point

What is a trampoline function?

C Language Agnostic Programming Languages Trampolines

Tools to get a pictorial function call graph of code

C Function Call Graph

Why isn't the size of an array parameter the same as within main?

C Arrays Function Sizeof

What does -D_XOPEN_SOURCE do/mean?

Reading string from input with space character?

C String Input Scanf Whitespace

The "backspace" escape character '\b': unexpected behavior?

C Language Agnostic Printf Special Characters Backspace

Difference between static memory allocation and dynamic memory allocation

C Memory Memory Management Dynamic Memory-Allocation Static Memory-Allocation

Macro vs Function in C

C Function C Preprocessor

How to convert enum names to string in c

Will strlen be calculated multiple times if used in a loop condition?

C++C Gcc Optimization Strlen

Why does c = ++(a+b) give compilation error?

Why is "a" != "a" in C?

Passing an array as an argument to a function in C

C Arrays Function Parameters Parameter Passing

Creating a new directory in C

C Linux Directory

error: unknown type name ‘bool’

Debug vs Release in CMake

Simple C example of doing an HTTP POST and consuming the response

C Http Http Post

Why don't two binaries of programs with only comments changed exactly match in gcc?

C Gcc Optimization Binary Reproducibility

Is there an interpreter for C?

C Interpreter Read Eval-Print-Loop

Getting terminal width in C?

C Linux Terminal Width

When you exit a C application, is the malloc-ed memory automatically freed?

C Memory Management

C libcurl get output into a string

How to compare strings in C conditional preprocessor-directives

C Conditional C Preprocessor

Static assert in C

C Gcc Assert Compile Time Static Assert

rails install pg - Can't find the 'libpq-fe.h header

C Ruby on-Rails Sqlite Ruby on-Rails-3 Pg

Why are C character literals ints instead of chars?

C++C Char Sizeof

How to write log base(2) in c/c++

What's the difference between hard and soft floating point numbers?

C Linux Floating Point Arm Libc

Please explain the exec() function and its family

Programmatically find the number of cores on a machine

C++C Multithreading Multiplatform

Typedef function pointer?

C++C Pointers Typedef

How would one write object-oriented code in C?

What is the fastest integer division supporting division by zero no matter what the result is?

C++C Optimization Divide by-Zero

Map a 2D array onto a 1D array

C Arrays Multidimensional Array

How to track down a "double free or corruption" error

C++C Debugging Free

How can I use "sizeof" in a preprocessor macro?

Why doesn't ANSI C have namespaces?

C Namespaces Ansi C

'uint32_t' identifier not found error

C++C Visual C++

Is "inline" without "static" or "extern" ever useful in C99?

Is C notably faster than C++

C++C Performance

default value for struct member in C

What's the best way to do a backwards loop in C/C#/C++?

What function is to replace a substring from a string in C?

C String Replace

Fixed-size floating point types

C++C Boost Floating Point

How to print time in format: 2009‐08‐10 18:17:54.811

How to make an OpenGL rendering context with transparent background?

C Winapi Opengl Transparency

The tilde operator in C

Why does sizeof(x++) not increment x?

What's the best way to check if a file exists in C?

C Filesystems Cross Platform

Is there a printf converter to print in binary format?

What is this "[0 ... 255] =" syntax in C?

C Gcc Extensions

Learn C first before learning Objective-C

C Objective C Cocoa

How to format strings using printf() to get equal length in the output

C String Printf Pretty Print

snprintf and Visual Studio 2010

C Visual Studio-2010

What is the difference between exit and return?

Mapping a numeric range onto another

What is the difference between exit(0) and exit(1) in C?

What is the significance of initializing direction arrays below with given values when developing chess program?

GCC fatal error: stdio.h: No such file or directory

(A + B + C) ≠ (A + C + B) and compiler reordering

C++C Compiler Construction Integer Overflow

Is it legal to index into a struct?

Can a 'for' loop inside of a 'for' loop use the same counter variable name?

C Loops For Loop Nested

Timer function to provide time in nano seconds using C++

What is the rationale for fread/fwrite taking size and count as arguments?

Casting a function pointer to another type

C Function Pointers

Use of exit() function

Nested function in C

C Function Nested

What is CHAR_BIT?

C Bit Manipulation

Concatenate int to string using C Preprocessor

C C Preprocessor Stringification

What is an unsigned char?

What are .a and .so files?

C Unix Compilation Shared Libraries .A

Ask GDB to list all functions in a program

C Linux Gcc Gdb X86 64

gcc/g++: "No such file or directory"

C++C Gcc G++C++ Faq

This source code is switching on a string in C. How does it do that?

C Switch Statement Label Constants

Why is a segmentation fault not recoverable?

C++C Exception Segmentation Fault

Are there machines, where sizeof(char) != 1, or at least CHAR_BIT > 8?

C Char Standards Sizeof C99

What is the fastest way to compute sin and cos together?

C#C++C Algorithm Math

Where did the name `atoi` come from?

C Naming Conventions Atoi

'do...while' vs. 'while'

C#C++C While Loop Do While

Are types like uint32, int32, uint64, int64 defined in any stdlib header?

What does __init mean in the Linux kernel code?

How does one represent the empty char?

Why is printf with a single argument (without conversion specifiers) deprecated?

C Security Printf Format Specifiers Puts

Confusion about array initialization in C

C Arrays Initialization Language Lawyer

Why is sizeof considered an operator?

C Operators Sizeof

Is there a performance difference between i++ and ++i in C?

C Performance Optimization Post Increment Pre Increment

How to set up a cron job to run an executable every hour?

C Linux Gcc Cron Crontab

Initialize/reset struct to zero/null

C Struct Initialization

"Unresolved inclusion" error with Eclipse CDT for C standard library headers

C Eclipse Eclipse Cdt Standard Library

Make a program run slowly

C++C Linux Unix Ubuntu

Call a C function from C++ code

C++C Linux Extern C

Why does everybody typedef over standard C types?

How to set breakpoints on future shared libraries with a command flag

C++C Linux Unix Gdb

What does extern inline do?

C++C Extern Inline Functions

convert big endian to little endian in C [without using provided func]

C Swap Endianness

What is the difference between fork and thread?

C Process Multithreading Fork

How can I compare strings in C using a `switch` statement?

C String Switch Statement String Comparison

Why do most C developers use define instead of const?

C Coding Style C Preprocessor

Why cast an unused function parameter value to void?

What does && mean in void *p = &&abc;

C++C Gcc Operators

gdb: "No symbol table is loaded"

What are vdso and vsyscall?

C Linux Linux Kernel Kernel Vdso

Does "Undefined Behavior" really permit anything to happen?

C++C Language Lawyer Undefined Behavior

Preventing console window from closing on Visual Studio C/C++ Console application

C Visual Studio Console

When is assembly faster than C?

C Performance Assembly

What is the difference between float and double?

C++C Floating Point Precision Ieee 754

Why are hexadecimal numbers prefixed with 0x?

Undefined reference to pthread_create in Linux

C Linux Multithreading Pthreads

Implicit type promotion rules

C Type Conversion Implicit Conversion

Valid use of goto for error management in C?

C Exception Handling Error Handling Goto

What is the purpose of fork()?

C Unix Posix Fork

minimum double value in C/C++

what is the unsigned datatype?

C Types Unsigned

How to empty a char array?

Why do I get a C malloc assertion failure?

C Gcc Malloc Assertion

Switch statement with returns -- code correctness

C Switch Statement Correctness

How to check if a string starts with another string in C?

C String Comparison Startswith

What does [ N ... M ] mean in C aggregate initializers?

PTHREAD_MUTEX_INITIALIZER vs pthread_mutex_init ( &mutex, param)

C Ubuntu Pthreads Mutex

Understanding INADDR_ANY for socket programming

What is the purpose of the RBP register in x86_64 assembler?

C Assembly X86 64 Stack Pointer

Unexpected exec permission from mmap when assembly files included in the project

C Linux Assembly Mmap Dep

In C can a long printf statement be broken up into multiple lines?

Why do you not use C for your web apps?

Php C Web Applications

Regarding 'main(int argc, char *argv[])'

How did this person code "Hello World" with Microsoft Paint?

How do you convert a byte array to a hexadecimal string in C?

How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories?

How to clear input buffer in C?

What is the effect of extern "C" in C++?

C++C Linkage Name Mangling Extern C

Why should we typedef a struct so often in C?

C Struct Typedef

Why is volatile needed in C?

C Declaration Volatile

C pointer to array/array of pointers disambiguation

C Arrays Pointers Variable Declaration

Why sizeof int is wrong, while sizeof(int) is right?

GDB: break if variable equal value

malloc for struct and pointer in C

C Memory Management

How to use SCNetworkReachability in Swift

Ios C Struct Swift Reachability

Unions and type-punning

C++C Unions Type Punning

What does "collect2: error: ld returned 1 exit status" mean?

C Compiler Errors

How to build x86 and/or x64 on Windows from command line with CMAKE?

C Visual Studio Cmake Cross Compiling X86 64

What is the time complexity of my function?

C Algorithm Time Complexity

Fastest way to zero out a 2d array in C?

C Arrays Multidimensional Array Zero Memset

How to use glOrtho() in OpenGL?

How do I return multiple values from a function in C?

How can I multiply and divide using only bit shifting and adding?

C Assembly Bit Manipulation Division Multiplication

How to make backtrace()/backtrace_symbols() print the function names?

C Linux Debugging Backtrace

Correct way of declaring pointer variables in C/C++

C++C Pointers Coding Style

Why can't C compilers rearrange struct members to eliminate alignment padding?

C Struct Compiler Optimization Memory Alignment

What is a “memory stomp”?

C++C Memory Memory Management

C Programming: How to read the whole file contents into a buffer

0.1 float is greater than 0.1 double. I expected it to be false

C++C Floating Point Double Rounding

How can I run a C program on Mac OS X using Terminal?

Results of printf() and system() are in the wrong order when output is redirected to a file

C Linux Printf Child Process Io Redirection

Can't compile a C program on a Mac after upgrading to Catalina 10.15

C Xcode Macos Gcc Macos Catalina

How to calculate the CPU usage of a process by PID in Linux from C?

C Linux Cpu Usage

What is the point of function pointers?

C++C Function Pointers C++ Faq

Print text instead of value from C enum

Difference between const & const volatile

What are the different versions of exec used for in C and C++?

C: printf a float value

C Floating Point

Convert hex string (char []) to int?

C Memory Management

Http status code with libcurl?

How to programmatically cause a core dump in C/C++

C++C Linux Coredump Abort

How to format a number from 1123456789 to 1,123,456,789 in C?

C Formatting Numbers

How to use nan and inf in C?

C Math Nan Infinity

Platform independent size_t Format specifiers in c?

C Platform Independent Size T Format String Format Specifiers

How to modify memory contents using GDB?

C Linux Memory Gdb

How does the Import Library work? Details?

C++C Windows Visual C++

What exactly is the "as-if" rule?

C++C Optimization C++ Faq As If

Understanding container_of macro in the Linux kernel

C Linux Kernel C Preprocessor

How can one print a size_t variable portably using the printf family?

Difference between surface and texture (SDL / general)

C Graphics Sdl Sdl 2

Why does C not allow concatenating strings when using the conditional operator?

C String Syntax Concatenation Conditional Operator

Why is assigning a value to a bit field not giving the same value back?

C++C Bit Fields Signed Integer Implementation Defined-Behavior

Testing pointers for validity (C/C++)

C++C Validation Pointers Null

C# vs C - Big performance difference

C#C Performance

Why should you use strncpy instead of strcpy?

C Buffer Overflow Strcpy C89 Strncpy

How to call C++ function from C?

C++C Visual C++Extern C

Struct memory layout in C

C Struct Memory Layout

How to get the current time in milliseconds from C in Linux?

Are GCC and Clang parsers really handwritten?

C Parsing Compiler Construction Compilation

Efficiency of premature return in a function

C#Java C++C Compiler Optimization

Multi line preprocessor macros

C++C C Preprocessor

Initializing entire 2D array with one value

C Arrays Initialization

Why does the terminal show "^[[A" "^[[B" "^[[C" "^[[D" when pressing the arrow keys in Ubuntu?

The differences between initialize, define, declare a variable

C++C Terminology

What's the purpose of this [1] at the end of struct declaration?

C Struct Reverse Engineering Declaration Typedef

How does free know how much to free?

C Size Pointers Free

What is Linux’s native GUI API?

C++C Linux User Interface

How do you get assembler output from C/C++ source in gcc?

C++C Assembly Gcc Disassembly

When to use static keyword before global variables?

C Static Keyword

Design Principles, Best Practices and Design Patterns for C (or Procedural Programming in general)?

C Design Patterns Principles

Are there any "design patterns" in C?

C Design Patterns

What does OpenCV's cvWaitKey( ) function do?

#ifdef inside #define

C C Preprocessor

Is it good practice to free a NULL pointer in C?

C Pointers Memory Management

How do I check if a variable is of a certain type (compare two types) in C?

What can cause a “Resource temporarily unavailable” on sock send() command

C Linux Sockets Unix

How does the main() method work in C?

Why is memmove faster than memcpy?

C++C Performance Memory

Open source PDF library for C/C++ application?

C++C Pdf Open Source

Easy way to use variables of enum types as string in C?

C Enums C Preprocessor

Threadsafe vs re-entrant

C Thread Safety Reentrancy

How to convert char to integer in C?

UNIX nonblocking I/O: O_NONBLOCK vs. FIONBIO

C Network Programming Unix Sockets

Does stack grow upward or downward?

When should I use malloc in C and when don't I?

C Memory Memory Management

Which functions from the standard library must (should) be avoided?

C Standard Library Obsolete

How do I compile a .c file on my Mac?

Detecting signed overflow in C/C++

C++C Undefined Behavior Signed Integer Overflow

Difference between <string.h> and <strings.h>

C String Header

Is gcc C compiler written in C itself?

C Gcc Compiler Construction

(Why) is using an uninitialized variable undefined behavior?

C Undefined Behavior Initialization

What is the difference between static const and const?

C Static Constants

Is there a standard sign function (signum, sgn) in C/C++?

Trying to understand gcc option -fomit-frame-pointer

C Performance Gcc Cpu Registers Stack Frame

How to copy a char array in C?

C Arrays Char Copy

Where can one find the C89/C90 standards in PDF format?

Is multiplication faster than float division?

C++C Performance Optimization

Why only define a macro if it's not already defined?

C Macros C Preprocessor Ifndef

Does the C standard explicitly indicate truth value as 0 or 1?

Why isn't all code compiled position independent?

Rounding integer division (instead of truncating)

C Math Int Rounding Integer Division

C99 boolean data type?

C Types Boolean C99

Searching in a sorted and rotated array

C++C Arrays Algorithm

C error: undefined reference to function, but it IS defined

C Function Linker Errors Undefined Reference

Parsing JSON using C

What's wrong with this 1988 C code?

How to display a progress indicator in pure C/C++ (cout/printf)?

C++C User Interface C++11 Io

Finding out what the GCC include path is

C Linux Gcc C Preprocessor

Printing null pointers with %p is undefined behavior?

C Language Lawyer C99 Undefined Behavior C11

Static linking vs dynamic linking

C++C Performance Static Linking Dynamic Linking

How many levels of pointers can we have?

C++C Pointers Language Lawyer Limit

How do I create a "spacer" in a C++ class memory structure?

C++C Memory Management Low Level Bare Metal

Variable declarations in header files - static or not?

Detecting CPU architecture compile-time

C++C Detection Cpu Architecture Compile Time

String Padding in C

C String Padding

I've heard i++ isn't thread safe, is ++i thread-safe?

C++C Multithreading

Default values in a C Struct

C Initialization

C/C++: Force Bit Field Order and Alignment

C++C Bit Manipulation Endianness Bit

Algorithm: efficient way to remove duplicate integers from an array

C Algorithm Arrays Duplicates

Uses of C comma operator

C++C Comma Operator

Using fflush(stdin)

error : storage class specified for parameter

Is snprintf() ALWAYS null terminating?

Why are memcpy() and memmove() faster than pointer increments?

What's the result of += in C and C++?

ISO C90 forbids mixed declarations and code in C

How to avoid using printf in a signal handler?

C Linux Signals

Visual Studio Code, #include <stdio.h> saying "Add include path to settings"

C++C Visual Studio-Code

Is it possible to initialize a C pointer to NULL?

C Pointers Initialization

Is C strongly typed?

C Strong Typing Weakly Typed

C non-blocking keyboard input

C Linux Asynchronous Input Nonblocking

Is it possible to modify a string of char in C?

C String Debugging

How to prevent scanf causing a buffer overflow in C?

C Scanf Buffer Overflow

How to get a FILE pointer from a file descriptor?

C Posix Mkstemp

What causes the Broken Pipe Error?

Convert an int to ASCII character

What are the barriers to understanding pointers and what can be done to overcome them?

Why is the use of alloca() not considered good practice?

C Stack Malloc Allocation Alloca

System where 1 byte != 8 bit?

C++C Byte History Computer Architecture

How to disable compiler optimizations in gcc?

C Gcc Compiler Optimization Compiler Options

How to deal with symbol collisions between statically linked libraries?

C Static Libraries Collision Symbols

"Life-time" of a string literal in C

C Function Local Variables String Literals Lifetime

dup2 / dup - why would I need to duplicate a file descriptor?

C Linux Operating System System Calls

How to repeat a char using printf?

Xcode - Warning: Implicit declaration of function is invalid in C99

What is a symbol table?

C++C Symbol Table

What does the unary plus operator do?

C#C++C Unary Operator

How to pass variable number of arguments to printf/sprintf

C++C Printf Variadic Functions

Specifically, what's dangerous about casting the result of malloc?

How to define a string literal in gcc command line?

C++C Gcc Command Line Macros

Super high performance C/C++ hash map (table, dictionary)

C++C Dictionary Hashtable Hashmap

Why do C and C++ support memberwise assignment of arrays within structs, but not generally?

C++C Arrays Variable Assignment Struct

How to allocate aligned memory only using the standard library?

C Memory Management

What is array to pointer decay?

C++C Arrays Pointers

What do square brackets mean in array initialization in C?

What's the use of memset() return value?

C - The %x format specifier

C String Security Format

Using roxygen2 and doxygen on the same package?

C R Documentation Doxygen Roxygen2

How do I convert a C string into a Rust string and back via FFI?

Why is this struct size 3 instead of 2?

Endless sine generation in C

C Performance Time Precision Trigonometry

What are the applications of the ## preprocessor operator and gotchas to consider?

C C Preprocessor Kernighan and-Ritchie Stringification

How can the Linux kernel compile itself?

C Linux Compiler Construction

C programming: How to program for Unicode?

C Unicode Utf 8 Character Encoding Locale

Is there any reason to use C instead of C++ for embedded development?

C++C Embedded C89

memset() or value initialization to zero out a struct?

C++C Visual C++Struct Initialization

Any simple way to log in Android NDK code?

Android C Logging Android Ndk Java Native-Interface

Why doesn't a+++++b work?

Case Insensitive String Comparison in C

C String String Comparison Standard Library Ignore Case

What is an opaque pointer in C?

C Pointers Opaque Pointers

What is this (( ))?

What makes Java easier to parse than C?

Java C Parsing Grammar

warning: Error disabling address space randomization: Operation not permitted

Is the definition of "volatile" this volatile, or is GCC having some standard compliancy problems?

C++C Gcc Standards

Why do you program in assembly?

C Performance Low Level Assembly

Why does strncpy not null terminate?

How can I get my C code to automatically print out its Git version hash?

C Git Version Control Workflow

Variably modified array at file scope

C Objective C Arrays Static Constants

Developing C wrapper API for Object-Oriented C++ code

What does "request for member '*******' in something not a structure or union" mean?

C Struct Unions

printf anomaly after "fork()"

C Linux Unix Printf Fork

Why is CUDA pinned memory so fast?

C++C Linux Cuda

trap representation

C++C Visual Studio-2010 Gcc Language Lawyer

Where is the <conio.h> header file on Linux? Why can't I find <conio.h>?

C Linux Gcc Header Files

Math constant PI value in C

Why is the size of a function in C always 1 byte?

C Function Size Sizeof

What Does This Valgrind Warning Mean? - warning set address range perms

C Memory Valgrind

Do compilers produce better code for do-while loops versus other types of loops?

C Performance Compiler Construction

Why does `free` in C not take the number of bytes to be freed?

C Memory Management Malloc Free

Efficient way to search an element

C Arrays Algorithm Sorting Search

Difference between uint8_t, uint_fast8_t and uint_least8_t

C++C Integer Avr C99

Why does printf("%f",0); give undefined behavior?

C++C Printf Implicit Conversion Undefined Behavior

Difference between a Structure and a Union

C Struct Unions

What is the difference between using a Makefile and CMake to compile the code?

C++C Makefile Cmake

Function pointers, Closures, and Lambda

C Lisp Lambda Computer Science Closures

Is TCHAR still relevant?

C++C Windows Unicode Wchar T

Are stack variables aligned by the GCC attribute((aligned(x)))?

C Gcc Memory Alignment Callstack

Selectively disable GCC warnings for only part of a translation unit

C++C Gcc Compiler Warnings Pragma

Getting "conflicting types for function" in C, why?

Using true and false in C

How to convert integer to char in C?

How does this program work?

C++C Memory Printf Endianness

What are the best (portable) cross-platform arbitrary-precision math libraries?

C++C Biginteger Bigdecimal Gmp

How, exactly, does the double-stringize trick work?

C C Preprocessor Stringification

strcpy vs. memcpy

C Memcpy Strcpy

Converting an int into a 4 byte char array (C)

How to code a modulo (%) operator in C/C++/Obj-C that handles negative numbers

C++C C++11 Operator Overloading Modulo

Why the strange indentation on switch statements?

Why (and when) do I need to use parentheses after sizeof?

What does the FD_CLOEXEC fcntl() flag do?

srand() — why call it only once?

What is use of c_str function?

C++C String C Str

difference between stdint.h and inttypes.h

C Uint64 Stdint

The difference between asm, asm volatile and clobbering memory

C Gcc Inline Assembly

What does "Objective-C is a superset of C more strictly than C++" mean exactly?

C++Objective C C

Correctly allocating multi-dimensional arrays

C Arrays Dynamic Arrays Dynamic Allocation Variable Length-Array

Auto-indent spaces with C in vim?

C Vim Coding Style Vi

How can one grab a stack trace in C?

C Windows Debugging Cross Platform Stack Trace

What is ":-!!" in C code?

C Linux Macros Linux Kernel

Is Fortran easier to optimize than C for heavy calculations?

C Performance Fortran

Why do all the C files written by my lecturer start with a single # on the first line?

C C Preprocessor

Is it a good idea to typedef pointers?

C++C Pointers Typedef Conventions

Why GDB jumps unpredictably between lines and prints variables as "<value optimized out>"?

C Optimization Compiler Construction Gdb Compilation

C function syntax, parameter types declared after parameter list

C Syntax Function

How can I completely disable calls to assert()?

How do I get DOUBLE_MAX?

How does photoshop blend two images together?

C++C Math Image Processing Photoshop

What is the purpose of the unary plus (+) operator in C?

C Expression Evaluation Unary Operator

script/tool to convert file to C/C++ source code array

Where does linux store my syslog?

C Linux Logging

Can multithreading be implemented on a single processor system?

C Windows Multithreading Winapi

Why would uint32_t be preferred rather than uint_fast32_t?

Why do C and C++ allow the expression (int) + 4*5?

C++C Casting Language Lawyer

memory bandwidth for many channels x86 systems

C X86 Openmp Avx512 Memory Bandwidth

How do I determine the number of digits of an integer in C?

How to avoid pressing Enter with getchar() for reading a single character only?

C Input Character Getchar Unbuffered

Printing all environment variables in C / C++

Static vs global

C Static Global

How to append strings using sprintf?

shared global variables in C

C Variables Linker Global Variables Scope

Why are Python Programs often slower than the Equivalent Program Written in C or C++?

C++Python C Performance Programming Languages

What is a portable method to find the maximum value of size_t?

Replacing ld with gold - any experience?

C++C Linker Migration Gold Linker

Where does the word "pragma" come from?

C++C Terminology Pragma

Are parentheses around the result significant in a return statement?

Two decimal places using printf( )

C++C Printf Decimal

How to concatenate string and int in C?

Where you can and cannot declare new variables in C?

When and why to use malloc?

C Malloc Dynamic Memory-Allocation

Is it safe to return a struct in C or C++?

C++C Function Struct Return Type

What is the role of libc(glibc) in our linux app?

At what point in the loop does integer overflow become undefined behavior?

C++C Undefined Behavior Integer Overflow

Recommended gcc warning options for C

C Gcc Compiler Errors

How to list physical disks?

C Windows Winapi Hard Drive

Assigning strings to arrays of characters

Is there ever a need for a "do {...} while ( )" loop?

Why are strlcpy and strlcat considered insecure?

C Security Strncpy Strlcpy

What is the difference between a static and const variable?

C++C Static Constants

Remove comments from C/C++ code

How do I print the full value of a long string in gdb?

C++C String Debugging Gdb

Calling a python method from C/C++, and extracting its return value

C++Python C Python C-Api Python Embedding

Which is faster: x<<1 or x<<10?

C++C Performance Cpu Low Level

performance of unsigned vs signed integers

C++C Integer Int Unsigned

Why does GCC pad functions with NOPs?

C Assembly Gcc Memory Alignment

Definition of int64_t

C++C Integer Long Integer

How to get Selected Text from select2 when using <input>

C Javascript Jquery Knockout 2.0 Jquery Select2

Saturating subtract/add for unsigned bytes

C++C Optimization Bit Manipulation Saturation Arithmetic

Big difference (x9) in the execution time between almost identical code in C and C++

C++C Performance Gcc Iostream

Double cast to unsigned int on Win32 is truncating to 2,147,483,648

C Visual C++Casting X86 Floating Point

Best timing method in C?

C Performance Timer Timing

Checking if a pointer is allocated memory or not

How to get MAC address of your machine using a C program?

C Linux Mac Address

Is it possible to iterate over arguments in variadic macros?

C Foreach C99 C Preprocessor Variadic

How to use /dev/random or urandom in C?

POSIX threads and signals

C Pthreads Signals

Is it possible to determine the thread holding a mutex?

C Linux Multithreading Pthreads Mutex

How to pass 2D array (matrix) in a function in C?

C Multidimensional Array Parameter Passing

Why use pointers?

How can I get a file's size in C?

How do you format an unsigned long long int using printf?

C Syntax Printf Format Specifiers Long Long

Generate a random float between 0 and 1

Ios C Random Floating Point Arc4random

Is it guaranteed to be safe to perform memcpy(0,0,0)?

C Memcpy Language Lawyer Null Pointer

Checking if float is an integer

C Floating Point Int

What is a file with extension .a?

C Gcc Shared Libraries

Why does modulus division (%) only work with integers?

Why does malloc initialize the values to 0 in gcc?

C Linux Gcc Malloc

Message "unknown type name 'uint8_t'" in MinGW

C Windows Mingw

Where to find the complete definition of off_t type?

C Sockets Networking Types Header Files

Difference between C standard library and C POSIX library

C Posix Standard Library

Why is a point-to-volatile pointer, like "volatile int * p", useful?

C Pointers Volatile

This obfuscated C code claims to run without a main(), but what does it really do?

C C Preprocessor Obfuscation

Is it safe to rename argc and argv in main function?

Can argc be zero on a POSIX system?

C Posix Language Lawyer Main

Why cast free's return value to void?

C Casting Free Void Legacy Code

Do you use the TR 24731 'safe' functions?

C Security Coding Style Tr24731

Socket accept - "Too many open files"

How to Declare a 32-bit Integer in C

Use of min and max functions in C++

How should I get started on writing device drivers?

C Assembly Hardware Drivers

What are intrinsics?

C++C Intrinsics

Get home directory in Linux

Finding the length of an integer in C

C Integer Digit

Moving from C++ to C

Is Google Test OK for testing C code?

Difference between .a .o and .lo file

C++C Shared Libraries Libraries

Real-world use of X-Macros

C Macros C Preprocessor X Macros

Using MPI_Bcast for MPI communication

C Mpi Broadcast

C code loop performance [continued]

C Performance Intel Instructions Assembly

What should be the sizeof(int) on a 64-bit machine?

undefined reference to `std::ios_base::Init::Init()'

C Matrix Coredump

Benefits of pure function

Difference between uint32 and uint32_t

C++C Uint32 Uint32 T

Fastest way to get a positive modulo in C/C++

C++C Performance

Portable way to check if directory exists [Windows/Linux, C]

C File Directory File Exists

Can code that will never be executed invoke undefined behavior?

C Language Lawyer

Difference between r+ and w+ in fopen()

Is it ever OK to not use free() on allocated memory?

C++C Memory Management Memory Leaks Heap Memory

Visually what happens to fork() in a For Loop

What is special about structs?

C Arrays Struct Return Return Value

Is using an unsigned rather than signed int more likely to cause bugs? Why?

C++C Google Style-Guide

Is there an elegant and fast way to test for the 1-bits in an integer to be in a contiguous region?

C++C Bit Manipulation

Tool to visualise code flow (C/C++)

C++C Code Analysis

How do I share variables between different .c files?

How to get the date and time values in a C program?

Erase the current printed console line

C Linux Console Erase

Why is the compiler throwing this warning: "missing initializer"? Isn't the structure initialized?

What is the size of void?

C++C Language Lawyer Sizeof

Volatile Struct Semantics

C Struct Volatile

Finding the length of a Character Array in C

Arrays C Strlen

Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

C Objective C Cocoa Cocoa Touch

What does (void) 'variable name' do at the beginning of a C function?

How to use nanosleep() in C? What are `tim.tv_sec` and `tim.tv_nsec`?

How to Add Linux Executable Files to .gitignore?

C++C Linux Git Gitignore

How to obtain JNI interface pointer (JNIEnv *) for asynchronous calls

Java C Multithreading Java Native-Interface

Difference between dangling pointer and memory leak

Conflict between a Stanford tutorial and GCC

C Gcc Memory Management

Is accessing data in the heap faster than from the stack?

C++C Performance Heap Memory Stack Memory

Does the order of members in a struct matter?

Switch-case won't compile after commenting out an unused line

Should we use exit() in C?

Why does the statement "2i;" NOT cause a compiler error?

"int *nums = {5, 2, 1, 4}" causes a segmentation fault

C Arrays Pointers

Android AudioRecord forcing another stream to MIC audio source

Java Android C Android Ndk Qualcomm

Why isn't #pragma once automatically assumed?

Parenthesis surrounding return values in C

C Syntax Coding Style

How should I structure complex projects in C?

C Project Management

How to Compile for OS X in Linux or Windows?

C++C Macos Cross Compiling

How do you implement a circular buffer in C?

C Data Structures Circular Buffer

min and max value of data type in C

pthreads mutex vs semaphore

C Linux Synchronization Pthreads Mutex

Does the size of an int depend on the compiler and/or processor?

How to turn off gcc compiler optimization to enable buffer overflow

C Gcc Buffer Overflow Compiler Optimization

What is the use of .exp and what is the difference between .lib and .dll?

C Dll Linker Static Libraries

Is there something like the official C documentation?

C Documentation

What is the max. value of a double/float on iOS?

Ios C Objective C Double

Is C open source?

C Compiler Construction Open Source

Undefined reference to sqrt (or other mathematical functions)

C Linker Errors Undefined Reference

How dangerous is it to compare floating point values?

Objective C Ios C Floating Point Floating Accuracy

How do I compile the asm generated by GCC?

C Gcc Compiler Construction Assembly

ULL suffix on a numeric literal

Copy struct to struct in C

C Struct Copy Microchip

How to get 100% CPU usage from a C program

C Windows Linux Performance Cray

Why would code actively try to prevent tail-call optimization?

C++C Optimization Compiler Optimization Tail Call-Optimization

Simulation of templates in C (for a queue data type)

Is it possible to call a C function from C#.Net

C C# 4.0 Interop

strcpy vs strdup

C Strcpy Strdup

Bind failed: Address already in use

C Linux Sockets

Addresses of two char pointers to different string literals are same

C Pointers Literals

Is there a reason why not to use link-time optimization (LTO)?

C++C Performance Compilation Compiler Optimization

How to convert const char* to char* in C?

C Pointers Const Char

Enum constants behaving differently in C and C++

Incrementing 'masked' bitsets

C++C Bit Manipulation Intrinsics

What's the difference between a header file and a library?

Take the address of a one-past-the-end array element via subscript: legal by the C++ Standard or not?

C++C Standards Language Lawyer

Bitwise operators and "endianness"

C Bit Manipulation Endianness Bit Shift

Print the address or pointer for value in C

C Pointers Memory Address

Alternative (K&R) C syntax for function declaration versus prototypes

C Function Function Declaration Kernighan and-Ritchie Function Definition

How do I show what fields a struct has in GDB?

Catch and compute overflow during multiplication of two large integers

C Integer Bit Manipulation Multiplication Integer Overflow

What does EAGAIN mean?

C Sockets Unix Posix

Explain this snippet which finds the maximum of two integers without using if-else or any other comparison operator?

C Algorithm Math Bit Manipulation Max

Which is better option to use for dividing an integer number by 2?

C++C Optimization Division Micro Optimization

How to printf "unsigned long" in C?

C Printf Long Integer Unsigned Format Specifiers

Is it possible to print out only a certain section of a C-string, without making a separate substring?

C Printf C Strings

Matrix multiplication: Small difference in matrix size, large difference in timings

C Performance Algorithm Matrix Multiplication

Python: why are * and ** faster than / and sqrt()?

Python C Performance Python 2.7 Python Internals

C program to check little vs. big endian

C Byte Endianness

why does %d stand for Integer?

C Formatting Printf

What are the rules for casting pointers in C?

C Pointers Casting

Why is this version of logical AND in C not showing short-circuit behavior?

C Short Circuiting

Make C floating point literals float (rather than double)

C Gcc Floating Point Literals

How to resolve the "EVP_DecryptFInal_ex: bad decrypt" during file decryption

C Encryption Openssl

Is this how the + operator is implemented in C?

C Operators Bitwise Operators

C addition using modulus

How can I run an external program from C and parse its output?

C External Process

Examples of good gotos in C or C++

Is using flexible array members in C bad practice?

C Arrays Data Structures Flexible Array-Member

Container Class / Library for C

How can I simulate OO-style polymorphism in C?

C Oop Polymorphism

state machines tutorials

C C99 State Machine

Unable to free const pointers in C

C Constants Free

For vs. while in C programming?

C Loops For Loop While Loop

How exactly does attribute((constructor)) work?

C++Objective C C Gcc

Fastest way to determine if an integer is between two integers (inclusive) with known sets of values

C++C Performance Math

Why FolderBrowserDialog dialog does not scroll to selected folder?

C#C Folderbrowserdialog

Why are NULL pointers defined differently in C and C++?

C++C Pointers Null

Is the behavior of subtracting two NULL pointers defined?

How does fread really work?

C and C++ : Partial initialization of automatic structure

C++ - include unistd.h: why not cunistd?

Declaring and checking/comparing (bitmask-)enums in Objective-C

Objective C C Cocoa Enums Bitmask

How can I read an input string of unknown length?

1D or 2D array, what's faster?

Read and write to binary files in C?

C Linux File Io Binary

Exceptions to array decaying into a pointer?

C Arrays Pointers

How to make parent wait for all child processes to finish?

C Process Operating System Fork Posix

If a 32-bit integer overflows, can we use a 40-bit structure instead of a 64-bit long one?

C++C Memory Management Integer Overflow

Compile and run program without main() in C

C Gcc Segmentation Fault Main Gcc Warning

Why is the ternary operator used to define 1 and 0 in a macro?

C++C Boolean Ternary Operator

Can I use NULL as substitution for the value of 0?

C++C Pointers Null Language Lawyer

Subtracting packed 8-bit integers in an 64-bit integer by 1 in parallel, SWAR without hardware SIMD

C++C Bit Manipulation Simd Swar

Understanding the behavior of C's preprocessor when a macro indirectly expands itself

C Macros C Preprocessor

Is there a way to insert assembly code into C?

C Inline Assembly Assembly

Getting a FILE* from a std::fstream

C++C File File Io Fstream

Best C/C++ Network Library

C++C Networking

Is NULL always false?

C Null Pointers

Why would you use 'extern "C++"'?

What are C macros useful for?

C Macros C Preprocessor Language Design Language Features

Array size at run time without dynamic allocation is allowed?

C++C Array Initialization

How do you introduce unit testing into a large, legacy (C/C++) codebase?

C++C Unit Testing Unix Legacy

What does the registerNatives() method do?

Java C Object Methods Java Native-Interface

Struct Inheritance in C

How do you declare string constants in C?

What are the most useful new features in C99?

Disadvantages of scanf

C Input User Input Scanf

error LNK2005: xxx already defined in MSVCRT.lib(MSVCR100.dll) C:\something\LIBCMT.lib(setlocal.obj)

C++C Visual C++Linker msvcr100.dll

C Programming: malloc() inside another function

C Function Pointers Malloc

How do I concatenate const/literal strings in C?

C String Concatenation

What is the LD_PRELOAD trick?

C Linux Environment Variables

increment value of int being pointed to by pointer

C Pointers Increment Post Increment

What's the use of suffix `f` on float value

C Floating Point

How to add multiple header include and library directories to the search path in a single gcc command?

Does const-correctness give the compiler more room for optimization?

C++C Pointers Constants Const Correctness

What is the equivalent to getch() & getche() in Linux?

C Linux Getchar Getch Getc

What happens if I don't call fclose() in a C program?

C File Io Fopen Fclose

How to project a point onto a plane in 3D?

"strlen(s1) - strlen(s2)" is never less than zero

C String Debugging Unsigned

Why does the order of '-l' option in gcc matter?

C Gcc Linker Ld

Why is the != operator not allowed with OpenMP?

C++C Multithreading Parallel Processing Openmp

Delete a file named "NUL" on Windows

C Windows Null Cygwin

How can I print the result of sizeof() at compile time in C?

C Sizeof Compile Time

'readline/readline.h' file not found

C Linux Libreadline

When to use bit-fields in C?

C++C Memory Struct Types

Unusual usage of .h file in C

Is declaration of variables expensive?

Why are there digraphs in C and C++?

C++C C99 Digraphs

C How to "draw" a Binary Tree to the console

C Algorithm Layout Binary Tree

Is malloc thread-safe?

C Multithreading Thread Safety Malloc

With arrays, why is it the case that a[5] == 5[a]?

C Arrays Pointers Pointer Arithmetic

Is < faster than <=?

C++C Performance Assembly Relational Operators

What is the difference between const int, const int const, and int const *?

C++C Pointers Constants C++ Faq

The Definitive C Book Guide and List

Is it possible to tell the branch predictor how likely it is to follow the branch?

C Gcc X86 Compiler Optimization Micro Optimization

What are the valid signatures for C's main() function?

C Language Lawyer Signature Entry Point Function Prototypes

Recursive mkdir() system call on Unix

C Posix Unix Mkdir

How does dereferencing of a function pointer happen?

C++C Pointers Function Pointers

Pthreads vs. OpenMP

C Pthreads Openmp

End of File (EOF) in C

How can I do GUI programming in C?

C Windows User Interface Graphics

ffmpeg.c what are pts and dts ? what does this code block do in ffmpeg.c?

When is an integer<->pointer cast actually correct?

C++C Pointers Casting

What's the Use of '\r' escape sequence?

C++C Escaping Carriage Return

What's the C++ suffix for long double literals?

C++C Literals Floating Point-Precision

Why must a short be converted to an int before arithmetic operations in C and C++?

C++C Int Short Integer Promotion

Does using heap memory (malloc/new) create a non-deterministic program?

C++C Real Time Deterministic Non Deterministic

What does impossibility to return arrays actually mean in C?

do { ... } while (0) — what is it good for?

Why does a function with no parameters (compared to the actual function definition) compile?

C Parameters Void Function Prototypes Function Parameter

Implementing RAII in pure C?

Variable declaration in a header file

Determine size of dynamically allocated memory in C

C Memory Dynamic Size Allocation

How to write a signal handler to catch SIGSEGV?

C Linux System Calls Signal Handling Mprotect

What exactly is meant by "de-referencing a NULL pointer"?

What are the implications of the linux __user macro?

C Macros Linux Kernel Kernel

Makefile to compile multiple C programs?

How do you check if a directory exists on Windows in C?

C Windows Winapi

How to prevent GCC from optimizing out a busy wait loop?

C Optimization Gcc Avr Gcc

Variable declaration after goto Label

C Goto Variable Declaration

What is the function of an asterisk before a function name?

C Function Pointers

Syntax and Sample Usage of _Generic in C11

Is char *envp[] as a third argument to main() portable

C Environment Variables Main Portability Function Signature

How can I check if a directory exists?

C Linux Directory

The difference between stdout and STDOUT_FILENO

Meaning of "referencing" and "dereferencing" in C

C Pointers Reference Dereference

How to view a pointer like an array in GDB?

Endless loop in C/C++

C++C Loops Infinite Loop

Is a^a or a-a undefined behaviour if a is not initialized?

C Undefined Behavior

Why does this program print "forked!" 4 times?

C Linux Unix Fork Systems Programming

How to build a release version binary in Go?

C Go Build Release

What is the purpose of ";" at the end of for loop?

Printing all global variables/local variables?

C Variables Gdb Global Variables

Why does the order of the loops affect performance when iterating over a 2D array?

C Performance For Loop Optimization Cpu Cache

Where do I find the current C or C++ standard documents?

C++C Standards C++ Faq

Is masking before unsigned left shift in C/C++ too paranoid?

C++C Language Lawyer Undefined Behavior Integer Arithmetic

What is C17 and what changes have been made to the language?

C Gcc Iso C11 C17

Convert a preprocessor token to a string

C C Preprocessor Stringification

How to copy directory from source tree to binary tree?

How can I break out of two nested for loops in Objective-C?

C Objective C Loops

What is the Cost of an L1 Cache Miss?

C Caching Memory Access

C - determine if a number is prime

Difference between "system" and "exec" in Linux?

C Linux Exec Fork

Should I use #include in headers?

C C Preprocessor File Organization

Linux Kernel: System call hooking example

C Linux Kernel Hook

Performance of built-in types : char vs short vs int vs. float vs. double

C++C Performance Built In

Maximum PID in Linux

Why does gcc allow arguments to be passed to a function defined to be with no arguments?

C Gcc Compiler Errors

DEBUG macros in C++

C++C Debugging C Preprocessor

Printing leading 0's in C

Concept behind these four lines of tricky C code

C Deobfuscation

fixed length data types in C/C++

Loop with a zero execution time

C++C Optimization Execution Time As If

Do temp variables slow down my program?

C Performance Temporary

Can argc overflow?

C Integer Overflow

Can I assume the size of long int is always 4 bytes?

C Linux Types Posix

Why define \0 as the first element of a char array in C?

Why not concatenate C source files before compilation?

C Compilation C Preprocessor

why does long long 2147483647 + 1 = -2147483648?

C++C Undefined Behavior Integer Overflow Twos Complement

Parameter evaluation order before a function calling in C

C Parameters Evaluation

Rerouting stdin and stdout from C

C Redirect Stdio

Override a function call in C

C Function Linker Overriding

What's the correct way to use printf to print a size_t?

Giving Command line arguments in Xcode in C program

C Xcode Command Line

How do I print a non-null-terminated string using printf?

C String Printf

what's the differences between r and rb in fopen

C Windows Linux File

How to compile .c file with OpenSSL includes?

C Linux Compiler Construction Openssl Compiler Errors

Embedding resources in executable using GCC

C++C Gcc Resources Embedded Resource

Launch Failed. Binary not found. CDT on Eclipse Helios

C++C Eclipse Eclipse Plugin Eclipse Cdt

GDB: Listing all mapped memory regions for a crashed process

Providing/passing argument to signal handler

C Signals Signal Handling

Difference between array type and array allocated with malloc

C Arrays Malloc Variable Length-Array

PDF specifications for coders: Adobe or ISO?

C++C Pdf Specifications

Mmh, who are you PRIu64?

C Macros Printf

Type conversion - unsigned to signed int/char

C Types Type Conversion Integer Promotion Signedness

Zombie process vs Orphan process

C Unix Fork Zombie Process

Poor memcpy Performance on Linux

C++C Linux Memcpy Numa

What exactly does `-rdynamic` do and when exactly is it needed?

C Gcc Shared Libraries Elf Dynamic Loading

Pointers to pointers vs. normal pointers

Why does "noreturn" function return?

C Assembly C11 Function Call Noreturn

Why do you need to recompile C/C++ for each OS?

C++C Winapi Compilation

Does C or C++ guarantee array < array + SIZE?

C++C Language Lawyer

Is there a one-line function that generates a triangle wave?

Passing an array by reference in C?

C Arrays Pass by-Reference

What do .c and .h file extensions mean to C?

C File Type Cs50

Why are global and static variables initialized to their default values?

C++C Static Global Variables

Mixing extern and const

C++C Constants Scope Extern

Get IP address of an interface on Linux

C Linux Sockets

Compiling without libc

C Gcc Glibc Demo Libc

g++ linker: force static linking if static library exists?

C++C Linker G++Static Libraries

Why is there no strtoi in stdlib.h?

Why can a string be assigned to a char* pointer, but not to a char[] array?

C String Pointers Initialization Reusability

How do I make Makefile to recompile only changed files?

C Makefile Recompile

Flushing buffers in C

C Buffer Fflush

C - freeing structs

C Struct Malloc

Do I need to keep a file open after calling mmap on it?

What are the common undefined/unspecified behavior for C that you run into?

C Language Lawyer Undefined Behavior Unspecified Behavior

How to write a while loop with the C preprocessor?

C While Loop C Preprocessor

What are the benefits of a relative path such as "../include/header.h" for a header?

C Include Header

Passing an ellipsis to another variadic function

C Variadic Functions

Is there an equivalent to WinAPI's MAX_PATH under linux/unix?

C++C Linux Unix Posix

Combine Gyroscope and Accelerometer Data

C Algorithm Accelerometer Lego Nxt

C and Python - different behaviour of the modulo (%) operation

Python C Math Modulo

Effect of using a comma instead of a semi-colon in C and C++

Hiding members in a C struct

C Struct Private Members

How to iterate over a string in C?

Faster way to zero memory than with memset?

Fastest way to get the integer part of sqrt(n)?

C++C Algorithm Math Performance

How and when to align to cache line size?

Can I use Intel syntax of x86 assembly with GCC?

C Gcc Assembly X86 Inline Assembly

Which ordering of nested loops for iterating over a 2D array is more efficient

C Performance For Loop Cpu Cache

Why are string literals l-value while all other literals are r-value?

C++C Literals String Literals

Is function call an effective memory barrier for modern platforms?

C Multithreading Memory Barriers

Floating point exception ( SIGFPE ) on 'int main(){ return(0); }'

C Linux Gcc Elf Sigfpe

How do I get the intersection between two arrays as a new array?

Java C++C Algorithm

Preprocessor check if multiple defines are not defined

C C Preprocessor

Why would you use the keyword const if you already know variable should be constant?

C++C Constants Keyword

How can a C compiler be written in C?

C Compiler Construction Kernighan and-Ritchie

What is the simplest standard conform way to produce a Segfault in C?

C Segmentation Fault Iso

Why would one use MACRO+0 !=0

What is the fastest way to swap values in C?

What do 1.#INF00, -1.#IND00 and -1.#IND mean?

Why is strncpy insecure?

C++C String Strncpy

Looking for a good hash table implementation in C

C String Hashtable Hash

how do aim bots in fps games work?

Best way to check if a character array is empty

C Arrays Null Char

How are exceptions implemented under the hood?

C++Python C Exception

Rules for using the restrict keyword in C?

C Optimization Memory

Append to GNU make variables via command line

C Makefile Gnu Make

How do you read a segfault kernel log message

C++C Unix Segmentation Fault Syslog

Arguments to main in C

C Command Line-Arguments Main Method

How to get the number of CPUs in Linux using C?

C Linux Multithreading Cpu Processor

segfault only when NOT using debugger

C Debugging Gdb Segmentation Fault

Copying one structure to another

How to generate CMakeLists.txt?

Mmap() an entire large file

Detect Windows or Linux in C, C++

C++C Windows Linux

Multi-Threading support in c11

C Multithreading C11

Returning from a void function

C Function Void

What are the differences between (and reasons to choose) tcmalloc/jemalloc and memory pools?

C Linux Memory Malloc Tcmalloc

How can I find the number of elements in an array?

C Arrays Sizeof

Why does C's printf format string have both %c and %s?

C String Formatting

How can I find the header files of the C programming language in Linux?

C Linux Gcc Header Files

Microsoft Crypto API Disable Use of RSAES-OAEP Key Transport Algorithm

C Windows Encryption Cryptography Mscapi

Whole one core dedicated to single process

C Linux Linux Kernel Cpu Scheduling

How to check if C string is empty

How to find the 'sizeof' (a pointer pointing to an array)?

C Arrays Pointers Sizeof

MIN and MAX in C

C Max Min C Preprocessor

Pointers in C: when to use the ampersand and the asterisk?

Multiple definition of ... linker error

C Linker Linker Errors

Array-size macro that rejects pointers

C Arrays Macros C Preprocessor

How do I use setsockopt(SO_REUSEADDR)?

C Sockets Raspberry Pi

The difference between C and C++ regarding the ++ operator

C++C Increment Prefix

What kind of optimization does const offer in C/C++?

C++C Constants Compiler Optimization

What does "[*]" (star modifier) mean in C?

C Function Parameters Variable Length-Array

Is copying 2D arrays with "memcpy" technically undefined behaviour?

C++C Multidimensional Array Language Lawyer Undefined Behavior

Extending python - to swig, not to swig or Cython

Python C++C Swig Cython

Invoking GCC as "cc" versus "gcc"

C Linux Gcc Compiler Construction Gnu

Seeing expanded C macros

C C Preprocessor

practical examples use dup or dup2

C File Unix System Calls Dup

How do you clear the console screen in C?

C Windows Console Console Application

Order of execution for an if with multiple conditionals

How to detect if the current process is being run by GDB

C Linux Gdb Posix

How to pass C structs back and forth to Java code in JNI?

Java C Java Native-Interface Android Ndk

Determining endianness at compile time

Left shifting with a negative shift count

how to make an application thread safe?

C++C Multithreading Concurrency Thread Safety

clock_gettime alternative in Mac OS X

C Macos Time Clock

Why bit endianness is an issue in bitfields?

C Cross Platform Portability Low Level Bit Fields

Why are there no hashtables in the C standard library?

C Dictionary Hashtable

How to write iOS app purely in C

Objective C Ios C Cocoa Touch Objective C-Runtime

How to do an specific action when a certain breakpoint is hit in GDB?

Where to find "gmp.h"?

How can I get what my main function has returned?

The real difference between "int" and "unsigned int"

Does Arduino use C or C++?

Can we have recursive macros?

C++C Macros C Preprocessor

How does a NOP sled work?

C Assembly Stack Buffer Overflow Nop

Complex C declaration

C++C Function Pointers Declaration

C++: Mysteriously huge speedup from keeping one operand in a register

C++C Performance Optimization Assembly

How to print an unsigned char in C?

How to write C/C++ code correctly when null pointer is not all bits zero

C++C Computer Architecture

Definitive List of Common Reasons for Segmentation Faults

C++C Segmentation Fault

Return void type in C and C++

C++C Gcc Clang Language Lawyer

Why is this code using strlen heavily 6.5x slower with GCC optimizations enabled?

C Performance Gcc Glibc

Choosing a static code analysis tool

How can I get the size of an array from a pointer in C?

C Memory Management Pointers Malloc

.o files vs .a files

C++C Linux Gcc Build Process

Compiling an application for use in highly radioactive environments

C++C Gcc Embedded Fault Tolerance

Combining C++ and C - how does #ifdef __cplusplus work?

C++C C Preprocessor Extern C

How to compile C code with anonymous structs / unions?

C++C Struct Anonymous Unions

File Operations in Android NDK

C File Io Java Native-Interface Android Ndk

Setting std=c99 flag in GCC

C Programming Languages C99

dereferencing pointer to incomplete type

C Struct Compiler Errors Typedef Dereference

Intrusive lists

how to make a process daemon

C Linux Daemon Systems Programming

How do I check if an integer is even or odd using bitwise operators

C Bitwise Operators

Call c function from Java

What is the reason for using a double pointer when adding a node in a linked list?

C Pointers Linked List

Aligning to cache line and knowing the cache line size

C Linux Caching Computer Architecture Memory Alignment

Difference between _Bool and bool types in C?

C Types Boolean

Valgrind not showing line numbers in spite of -g flag (on Ubuntu 11.10/VirtualBox)

htons() function in socket programing

C Sockets Unix Socket

Return value optimization and copy elision in C

C++C Struct Return Value-Optimization Copy Elision

Why wasn't a specifier for `float` defined in `printf`?

C Floating Point Printf C Standard-Library

How to compile executable for Windows with GCC with Linux Subsystem?

func() vs func(void) in C99

Why is memcmp(a, b, 4) only sometimes optimized to a uint32 comparison?

C Gcc Clang X86 64 Compiler Optimization

What is the difference between returning a char* and a char[] from a function?

C String Pointers

Daemon logging in Linux

C Linux Logging Daemon

Is f(void) deprecated in modern C and C++?

C++C Refactoring Void

Is there a way to find all the functions exposed by a dll

C++C Winapi Dll

What's the best way to do a reverse 'for' loop with an unsigned index?

How do I modify a pointer that has been passed into a function in C?

C Function Pointers Parameters Pass by-Value

Perceptron learning algorithm not converging to 0

C Algorithm Machine Learning Neural Network Perceptron

Does Qt have a C interface?

Using malloc for allocation of multi-dimensional arrays with different row lengths

C Arrays Malloc

How to return a value from pthread threads in C?

Difference between fflush and fsync

Fflush Fsync C Windows

Where is `%p` useful with printf?

readelf-like tool for Mac OS X?

C Macos Function Symbols

What is the difference between sscanf or atoi to convert a string to an integer?

What's the difference between a null pointer and a void pointer?

atol() v/s. strtol()

How to set socket timeout in C when making multiple connections?

C Linux Sockets

warning: left shift count >= width of type

C Bit Manipulation Long Integer Bit Shift

What is the purpose of the h and hh modifiers for printf?

C Printf Variadic Functions Promotions Format Specifiers

Code for printf function in C

Converting from signed char to unsigned char and back again?

C++C Java Native-Interface

The difference of int8_t, int_least8_t and int_fast8_t?

What is the meaning of lines starting with a hash sign and number like '# 1 "a.c"' in the gcc preprocessor output?

C Gcc C Preprocessor

How to define relative paths in Visual Studio Project?

C Visual Studio Visual Studio-2008 Visual C++

C/C++ global vs static global

C++C Static Global Variables

What if I don't write default in switch case?

C Switch Statement

Length of array in function argument

What is the purpose of epoll's edge triggered option?

C Sockets Epoll

Going through a text file line by line in C

C Getline Scanf

How to use gdb with LD_PRELOAD

C Linux Gcc Gdb X86 64

What is the difference between NULL, '\0' and 0?

C Pointers Null

What is the behavior of printing NULL with printf's %s specifier?

C Linux Language Lawyer Compiler Bug

Difference between rdtscp, rdtsc : memory and cpuid / rdtsc?

C++C Performance Assembly Rdtsc

Printf long long int in C with GCC?

C Gcc Printf C99

Can I turn unsigned char into char and vice versa?

Is there a 128 bit integer in gcc?

C Gcc X86 64 Bigint 128 Bit

Why do I have to specify data type each time in C to printf() and scanf()?

C Compiler Construction Printf Scanf

Returning function pointer type

C Syntax Types Function Pointers

Linux shared memory: shmget() vs mmap()?

C Linux Posix Shared Memory Mmap

Delphi XE6 link C code in iOS

Ios C Delphi Pascal Delphi Xe6

Convert word2vec bin file to text

Python C Gensim Word2vec

What is the use of the `inline` keyword in C?

Is #define banned in industry standards?

C C Preprocessor Preprocessor Directive

If I want to round an unsigned integer to the closest smaller or equal even integer, can I divide by 2 then multiply by 2?

Why is statically linking glibc discouraged?

C++C Linker Glibc Static Linking

How do you get a directory listing in C?

C File Directory Cross Platform Common Tasks

C/C++ source code visualization?

C++C Visualization

How Does sizeof(Array) work

Post-increment on a dereferenced pointer?

C Pointers Operator Precedence

Trie implementation

C++C Data Structures Trie

What makes a C standard library function dangerous, and what is the alternative?

What Happens When Stack and Heap Collide

C++C Memory Heap Memory Stack Memory

How to capture Control+D signal?

C Linux Unix Signals

Why enclose blocks of C code in curly braces?

C Scope Curly Braces

How do free and malloc work in C?

C Memory Free Malloc

What is the type of string literals in C and C++?

C++C String Constants

How to print a int64_t type in C

Why is memory allocation on heap MUCH slower than on stack?

C Memory Management Stack

Is there any way a C/C++ program can crash before main()?

C++C Function Crash

Arithmetic bit-shift on a signed integer

C Bit Manipulation Bit Shift

printf and long double

C Gcc Printf Long Double

Error: Address already in use while binding socket with address but the port number is shown free by `netstat`

C Linux Sockets

redirect stdout/stderr to a string

C++C Stdout Stderr

How do header and source files in C work?

C Compilation Header Files

know if .lib is static or import

C++C Windows Dll

How can a Format-String vulnerability be exploited?

C Security Format String

When to use const char * and when to use const char []

How can I check if char* variable points to empty string?

C Pointers Char

Global variables in header file

Free memory allocated in a different function?

C Pointers Memory Management Malloc Free

How do I get the unix timestamp in C as an int?

C Unix Timestamp Epoch

How to compile makefile using MinGW?

C Compiler Construction Makefile Mingw

typeof operator in C

How to share memory between processes created by fork()?

What is the default C -std standard version for the current GCC (especially on Ubuntu)?

C Ubuntu Gcc C99 C11

Technically, how do variadic functions work? How does printf work?

C++C Variadic Functions

What does it mean for a program to be 32 or 64 bit?

C / C++ compiler warnings: do you clean up all your code to remove them or leave them in?

C++C Compiler Construction Warnings

Why Switch/Case and not If/Else If?

C++C Switch Statement Conditional Statements

How do I get a specific range of numbers from rand()?

Convert RGB to Black & White in OpenCV

C++C Image Processing Opencv Computer Vision

How to detect LLVM and its version through #define directives?

C Clang Llvm C Preprocessor

Does Function pointer make the program slow?

C Pointers Function Pointers

How does one encode a series of images into H264 using the x264 C API?

C Image h.264 X264

Is void a data type in C?

Very small programs to improve programming skills?

How to get the Enum Index value in C#

C#C Enums Integer

Why are LIB files beasts of such a duplicitous nature?

C Dll Shared Libraries Static Libraries

Fast method to copy memory with translation - ARGB to BGR

C X86 Rgb Sse Micro Optimization

Hide password input on terminal

C Linux Gcc Terminal Masking

Floating point comparison

C++C Floating Point

Set variable text column width in printf

strdup or _strdup?

C++C Visual Studio Strdup

True and False for && logic and || Logic table

Const correctness in C vs C++

Dot (".") operator and arrow ("->") operator use in C vs. Objective-C

Objective C C Pointers Dot Operator

Easily measure elapsed time

C++C Linux Time Measurement

How to split a string literal across multiple lines in C / Objective-C?

C Objective C String Literals

Is NULL always zero in C?

C Pointers Null Zero

What happens to memory after '\0' in a C string?

C String Pointers Malloc C Strings

Why use asprintf() instead of sprintf()?

C Printf Gnu Asprintf

How to get the sign, mantissa and exponent of a floating point number

C Floating Point Emulation

How to get the real and total length of char * (char array)?

C++C Arrays Pointers Char

Are pointers considered a method of calling by reference in C?

C Pointers Pass by-Reference

How does the compiler allocate memory without knowing the size at compile time?

C Arrays Memory C99 Variable Length-Array

How could I graphically display the memory layout from a .map file?

Is ncurses available for windows?

What is the difference between read() and fread()?

What exactly is va_end for? Is it always necessary to call it?

C++C Variadic Functions

Convert a Static Library to a Shared Library?

C Linux Shared Libraries Static Libraries

Passing variable number of arguments around

C Variadic Functions

Compile a DLL in C/C++, then call it from another program

C++C Gcc Vb6 Mingw

Are there any platforms where pointers to different types have different sizes?

C Pointers Sizeof

sem_init on OS X

C Macos Pthreads Semaphore

Why is argc an 'int' (rather than an 'unsigned int')?

C++C Command Line

Can I get Unix's pthread.h to compile in Windows?

C Windows Multithreading Pthreads

Why won't extern link to a static variable?

C Static Extern

Detached vs. Joinable POSIX threads

C Linux Pthreads Detach

Contents of a static library

C++C Gcc Static Libraries Object Files

What's the point of const void?

C++C Function Constants Void

How to check what shared libraries are loaded at run time for a given process?

C++C Linux Shared Libraries

Programming languages that compile into C/C++ source?

C++C Programming Languages Code Translation

I have Python on my Ubuntu system, but gcc can't find Python.h

Python C Ubuntu Header

How to recursively list directories in C on Linux?

C Linux Recursion

Is type-punning through a union unspecified in C99, and has it become specified in C11?

C C99 Unions C11 Type Punning

Get the compiler options from a compiled executable?

Can a near-zero floating value cause a divide-by-zero error?

C++C Floating Point Divide by-Zero

Difference between section and task openmp

C Parallel Processing Openmp

Parallel for vs omp simd: when to use each?

C++C Performance Openmp Simd

When is uint8_t ≠ unsigned char?

C++C Types Unsigned Char Uint8t

In C, sizeof operator returns 8 bytes when passing 2.5m but 4 bytes when passing 1.25m * 2

How was the first C compiler written?

C Assembly Compiler Construction

Can we use C code in Python?

Python C Linux Compiler Construction

How to get absolute value from double - c-language

How does the C preprocessor handle circular dependencies?

C Linux Gcc C Preprocessor

Empty loop is slower than a non-empty one in C

C Performance Loops

How does this C program compile and run with two main functions?

Can I have Swift, Objective-C, C and C++ files in the same Xcode project?

C++Objective C C Swift Bridging Header

Using if (!!(expr)) instead of if (expr)

Is it bad to declare a C-style string without const? If so, why?

How to add a builtin function in a GCC plugin?

C Gcc Built In Gcc Plugins

In a GNU C macro envSet(name), what does (void) "" name mean?

C Gcc Macros C Preprocessor

Why is -(-2147483648) = - 2147483648 in a 32-bit machine?

C 32 Bit Twos Complement

How do you do exponentiation in C?

Difference between files written in binary and text mode

What is the best IDE for C Development / Why use Emacs over an IDE?

How do I work with dynamic multi-dimensional arrays in C?

C Arrays Dynamic

Why do I always get the same sequence of random numbers with rand()?

Download file using libcurl in C/C++

C File Download Libcurl

How to print pthread_t

C++C Linux Pthreads

Why does open() create my file with the wrong permissions?

find if 4 points on a plane form a rectangle?

C Algorithm Geometry

Efficiency: arrays vs pointers

C Arrays Pointers Performance Memory Access

How do I run a C program from VIM?

Hexadecimal string to byte array in C

How to execute a shell script from C in Linux?

Split string in C every white space

What is the difference between using _exit() & exit() in a conventional Linux fork-exec?

C Linux Return Fork Exit

Multi-line DEFINE directives?

C++C Compiler Construction

How do I share a global variable between c files?

What does a dot before the variable name in struct mean?

How to read string from keyboard using C?

Can a C macro definition refer to other macros?

C C Preprocessor

Strings and character with printf

How does GCC optimize out an unused variable incremented inside a loop?

C Gcc Compiler Optimization Disassembly

Efficient integer compare function

C Assembly X86 Inline Assembly

Are the results of bitwise operations on signed integers defined?

C Bitwise Operators

how to print __uint128_t number using gcc?

Point in Polygon Algorithm

EXIT_FAILURE vs exit(1)?

How to set include path in xcode project

C Xcode Include Environment Variables

Is it better to avoid using the mod operator when possible?

C Performance Optimization Modulo

What is 1LL or 2LL in C and C++?

C++C Math Long Integer Cmath

Whats the difference between UInt8 and uint8_t

C++Objective C C

Do I need to compile the header files in a C program?

C : typedef struct name {...}; VS typedef struct{...} name;

C Struct Typedef

undefined reference when calling inline function

C Function Undefined Inline Header Files

Getting a weird percent sign in printf output in terminal with C

Does free() set errno?

C Linux Memory Management

Is a C compiler allowed to coalesce sequential assignments to volatile variables?

C Language Lawyer Compiler Optimization Volatile

Why use hex?

What registers to save in the ARM C calling convention?

C Assembly Arm Calling Convention Function Call

How to estimate the thread context switching overhead?

C++C Multithreading Windows Mobile

Question about a function definition (three dots in parameters..)

Objective-C sample code for HMAC-SHA1

C Objective C Sha1 Hmac

How does "while(s++ = t++)" copy a string?

Is char guaranteed to be exactly 8-bit long?

List of all users and groups

C Objective C Cocoa Macos Macos Carbon

Converting between C++ std::vector and C array without copying

C++C Arrays Stl Stdvector

How can I copy a file on Unix using C?

How to set the name of a thread in Linux pthreads?

C Linux Pthreads

Meaning of U suffix

How to split a C program into multiple files?

Convert javascript code to c code

Javascript C Compiler Construction

What is the Log API to call from an Android JNI program?

Android C Android Emulator Android Ndk

call printf using va_list

C Printf Variadic Functions

How do we check if a pointer is NULL pointer?

Correctness of Sakamoto's algorithm to find the day of week

C Algorithm Dayofweek Correctness

Pre & post increment operator behavior in C, C++, Java, & C#

What is the difference between static_cast and reinterpret_cast?

C++C Casting Struct

Long Vs. Int C/C++ - What's The Point?

C++C Integer Long Integer

How do function pointers in C work?

C Function Pointers

What is the difference between char * const and const char *?

C Pointers Constants

Should I return 0 or 1 for successful function?

What does this GCC error "... relocation truncated to fit..." mean?

C Eclipse Memory Management Gcc Embedded

CMAKE - How to properly copy static library's header file into /usr/include?

C Cmake Static Libraries

Difference between int main() and int main(void)?

segmentation fault : 11

C Segmentation Fault

Using pointers to remove item from singly-linked list

C Pointers Linked List

c - warning: implicit declaration of function ‘printf’

How are variable names stored in memory in C?

C Variables Memory Symbol Table

Using make with -j4 or -j8

C Opencv Makefile

What is the difference between a Linux platform driver and normal device driver?

C Linux Linux Kernel Linux Device-Driver

C99 inline function in .c file

Why does MSVS not optimize away +0?

C Floating Point

Why do we cast sockaddr_in to sockaddr when calling bind()?

C Linux Sockets

How memset initializes an array of integers by -1?

C++C Arrays Twos Complement Memset

Why is assert a macro and not a function?

C Assert C Preprocessor

Pointer declared as constant as well as volatile

C Constants Volatile

What is the difference between casting to `float` and adding `f` as a suffix when initializing a `float`?

C Casting Floating Point

What does the integer suffix J mean?

C++C Integer Suffix

C vs C++ struct alignment

C++C Pointers Struct Object Layout

"Use of a signed integer operand with a binary bitwise operator" - when using unsigned short

C Clion Clang Tidy

Why does double in C print fewer decimal digits than C++?

C++C Floating Point Numbers Precision

Why can't the C compiler optimize changing the value of a const pointer assuming that two pointers to the same variable would be illegal/UB?

C Rust Undefined Behavior Strict Aliasing

I need a way in a C preprocessor #if to test if a value will create a 0-size array

makefiles - compile all c files at once

Why aren't my compile guards preventing multiple definition inclusions?

C Linker Multiple Inclusions

How to get function's name from function's pointer in Linux kernel?

C Linux Kernel Function Pointers

Should a buffer of bytes be signed or unsigned char buffer?

C++C Char Buffer

The ternary (conditional) operator in C

C Operators Ternary Operator Conditional Operator

Is it possible to store the address of a label in a variable and use goto to jump to it?

C Pointers Label Goto Memory Address

size of struct in C

C Struct Structure Packing

What defines an opaque type in C, and when are they necessary and/or useful?

How can I benchmark C code easily?

Can I share a file descriptor to another process on linux or are they local to the process?

Must declare function prototype in C?

C Function Function Prototypes

What does 'unsigned temp:3' in a struct or union mean?

C++C Bit Fields Colon

faster alternative to memcpy?

C Performance Memcpy

Best way to invoke gdb from inside program to print its stacktrace?

C Linux Gdb Stack Trace

Tell gcc to specifically unroll a loop

C Gcc Pragma Unroll

Where are C/C++ main function's parameters?

C++C Parameters Location Main

Double pointer const-correctness warnings in C

C Constants Implicit Conversion Qualifiers Multiple Indirection

Does true equal to 1 and false equal to 0?

How to create a single instance application in C or C++

C++C Linux Single Instance

Can GCC not complain about undefined references?

C Gcc Compiler Errors Compiler Warnings

What is the function of "(void) (&_min1 == &_min2)" in the min macro in kernel.h?

Difference between uint and unsigned int?

How to trigger SIGUSR1 and SIGUSR2?

How are asynchronous signal handlers executed on Linux?

C Linux Signals Signal Handling

What is time(NULL) in C?

When are anonymous structs and unions useful in C11?

c array - warning: format not a string literal

C Compiler Warnings

Time in milliseconds in C

What is GLIBC? What is it used for?

C Gnu Glibc Standard Library

Is there any reason not to use fixed width integer types (e.g. uint8_t)?

C Integer Byte Sizeof C99

What's the purpose of using braces (i.e. {}) for a single-line if or loop?

C++C Coding Style Curly Braces Defensive Programming

Is uninitialized local variable the fastest random number generator?

C++C Undefined Behavior Garbage

Detecting superfluous #includes in C/C++?

C++C Refactoring Include Dependencies

C/C++ include header file order

How do I link object files in C? Fails with "Undefined symbols for architecture x86_64"

C Gcc Compilation

C# performance - Using unsafe pointers instead of IntPtr and Marshal

C#C Pinvoke Marshalling Unsafe

Weak symbol aliases on OS X similar to those on Linux, or a closest equivalent?

C Linux Macos Linker Dynamic Linking

Do negative numbers return false in C/C++?

Does any C library implement C11 threads for GNU/Linux?

C Multithreading C11

Is accessing a global array outside its bound undefined behavior?

C Undefined Behavior

Xlib and Firefox behavior

In C, how would I choose whether to return a struct or a pointer to a struct?

C Pointers Struct Malloc

Why are the memory addresses of string literals so different from others', on Linux?

C Linux Memory Memory Address String Literals

What's the difference between const array and static const array in C/C++

C++C Arrays Static Constants

How is numpy so fast?

C++Arrays C Performance Numpy

How can I create a dynamically sized array of structs?

C Dynamic Memory Management

Namespaces in C

C++C Namespaces C Preprocessor

How to extract the decimal part from a floating point number in C?

C Floating Point Decimal Numbers

Alternatives to Autoconf and Autotools?

C Autotools Autoconf

Determining C executable name

C Gcc Compilation Executable Linkage

What's sizeof(size_t) on 32-bit vs the various 64-bit data models?

C 64 Bit Sizeof Size T

Call a function named in a string variable in C

Why do round() and ceil() not return an integer?

C++C Casting Rounding

How to print a null-terminated string with newlines without showing backslash escapes in gdb?

C Debugging Gdb

Visual C++ equivalent of GCC's attribute ((packed))

C++C Visual C++Gcc Data Structures

What is the maximum length in chars needed to represent any double value?

C++C Floating Point

Why should I always enable compiler warnings?

C++C Warnings Compiler Warnings C++ Faq

C default arguments

C Arguments Default Parameters

Size of character ('a') in C/C++

Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?

C++C Linux Dll Linker

How to use #if inside #define in the C preprocessor?

C C Preprocessor

Type-safe generic data structures in plain-old C?

C Generics Data Structures Code Generation

What does tilde(~) operator do?

What does "Ex" stand for in Windows API function names?

C Windows Api Shared Libraries

hello world in C without semicolons and without IF/WHILE/FOR statements

What does it mean to align the stack?

C Assembly Gcc X86 Memory Alignment

How does a 'const struct' differ from a 'struct'?

How to access a local variable from a different function using pointers?

C++C Pointers Local Variables

How do I execute an external program within C code in Linux with arguments?

What is the difference between xmalloc and malloc?

Undefined reference to main - collect2: ld returned 1 exit status

C Gcc Reference

get absolute value without using abs function nor if statement

C++C Bit Manipulation

Why memory functions such as memset, memchr... are in string.h, but not in stdlib.h with another mem functions?

C Function Memory Header

Why is matrix multiplication faster with numpy than with ctypes in Python?

Python C Benchmarking Matrix Multiplication

Why is sin_addr inside the structure in_addr?

Working of asm volatile ("" : : : "memory")

C Gcc Arm Embedded Linux Volatile

%i or %d to print integer in C using printf()?

C Console Integer Int Printf

Extending a struct in C

Why use double indirection? or Why use pointers to pointers?

Is 0 an octal or a decimal in C?

C Language Lawyer Literals Octal

Crash or "segmentation fault" when data is copied/scanned/read to an uninitialized pointer

C Pointers Segmentation Fault

Is unevaluated division by 0 undefined behavior?

C++C Language Lawyer

Will printf still have a cost even if I redirect output to /dev/null?

C Linux Performance Embedded Dev Null

What does ((void (*)())buf)(); mean?

C Function Pointers Function Pointers

Why can't I convert 'char**' to a 'const char* const*' in C?

C Pointers Constants Const Correctness

When is it ok to use a global variable in C?

C Global Variables

Pointer Arithmetic

C Pointers Pointer Arithmetic

Using a C++ class member function as a C callback function

C++C Interop Callback

Is the sizeof(enum) == sizeof(int), always?

C Enums Constants C Preprocessor

Get list of static libraries used in an executable

C++C Unix Static Linker

Does the C preprocessor strip comments or expand macros first?

C Comments C Preprocessor C99

Removing a non empty directory programmatically in C or C++

Does C support overloading?

What are *-devel packages?

C warning implicit declaration of function 'exit'

How can I create C header files

C Function Header Files Modular

How to implement a timeout in read() function call?

Pointer subtraction confusion

What is the fundamental difference between source and header files in C?

Opaque C structs: various ways to declare them

C Coding Style Struct Typedef Opaque Pointers

In C, what does a variable declaration with two asterisks (**) mean?

How to assign pointer address manually in C programming language?

C Memory Pointers

How to assign a C struct inline?

What do R_X86_64_32S and R_X86_64_64 relocation mean?

C Compiler Construction Linker Elf Relocation

OpenMP: are local variables automatically private?

C++C Parallel Processing Openmp

Specifying multiple files with LD_PRELOAD

C Linux Dynamic X86

Determine if char is a num or letter

C Char Alphanumeric

How to specify 64 bit integers in c

C 64 Bit Sizeof

Unix socket, SOCK_SEQPACKET vs SOCK_DGRAM

Fast computing of log2 for 64-bit integers

C 64 Bit Bit Manipulation 32bit 64bit Lookup

Changing address contained by pointer using function

C Function Pointers

Reading in double values with scanf in c

C Scanf Conversion Specifier

Does a static function need the static keyword for the prototype in C?

C Static Functions

Reasoning behind C sockets sockaddr and sockaddr_storage

Append to the end of a file in C

C File Append Fseek

C job interview - casting and comparing

C Casting Char Int

How to invoke function from external .c file in C?

C Function External

How to create a C project with CLion

C++C Cmake Clion

How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor?

C++C Cross Platform C Preprocessor Os Detection

This C function should always return false, but it doesn’t

Why GCC compiled C program needs .eh_frame section?

C Assembly Exception Handling X86 Elf

Why does declaring main as an array compile?

C Gcc Clang Main

Are C/C++ fundamental types atomic?

C++C Multithreading Atomic

"error: assignment to expression with array type error" when I assign a struct field (C)

C Arrays String Struct Initialization

What is the need of empty braces '{ }' at the end of array of structs?

C Arrays Struct Linux Kernel

What is the full "for" loop syntax in C?

C Syntax For Loop

Has anyone ever had a use for the COUNTER pre-processor macro?

String input to flex lexer

C Bison Yacc Lex Flex Lexer

How to truncate a file in C?

C File Truncate Truncation

How to simulate an EOF?

C Eof Getchar Kernighan and-Ritchie

C: for loop int initial declaration

C For Loop Gcc Syntax Error

Concatenating strings in C, which method is more efficient?

C String Performance Concatenation

initial value of int array in C

C Arrays Compiler Construction

Where are constant variables stored in C?

C Variables Memory Management Constants Global

How do I gaussian blur an image without using any in-built gaussian functions?

C Image Processing Gaussianblur

How to raise warning if return value is disregarded?

C++C Gcc Static Analysis

Copying a part of a string (substring) in C

How do you query a pthread to see if it is still running?

C Multithreading Concurrency Pthreads Destructor

What is the fastest way to find if a number is even or odd?

C Micro Optimization

constant variables not working in header

C++C Visual Studio Visual Studio-2008 Visual C++

What does "WINAPI" in main function mean?

C++C Windows Winapi Winmain

gcc, strict-aliasing, and horror stories

C Gcc Strict Aliasing

How can I correctly assign a new string value?

C String Struct Strcpy

Checking if a directory exists in Unix (system call)

C++C Unix Directory Exists

What does the symbol \0 mean in a string-literal?

C++C String Escaping String Literals

'printf' with leading zeros in C

C Formatting Printf

max value of integer

Java C Integer Max Bit

Stack smashing detected

C Exception Stack

Core dumped, but core file is not in the current directory?

C Linux Coredump

Is memory allocation a system call?

C++C Operating System Heap Memory

Warning: ignoring return value of 'scanf', declared with attribute warn_unused_result

why does accessing an element in an array take constant time?

C Arrays Time Constants Complexity Theory

How to convert string to float?

C Floating Point Type Conversion Atof Strtod

how does malloc understand alignment?

C++C Memory Alignment

Is there a good reason for always enclosing a define in parentheses in C?

C C Preprocessor Parentheses

Is it possible to convert char[] to char* in C?

Define functions in structs

Can I define a function inside a C structure?

C Function Structure

Can you have a triple minus signs in C programming? What does it mean?

Simple way to check if a string contains another string in C?

C String Substring

Why is this an undefined behavior?

C++C Undefined Behavior

Can a const variable be used to declare the size of an array in C?

C Arrays Constants

How do I use typedef and typedef enum in C?

Why Swift is 100 times slower than C in this image processing test?

C Macos Performance Swift

Does &((struct name *)NULL -> b) cause undefined behaviour in C11?

C Language Lawyer C11 Offsetof

How do I use valgrind to find memory leaks?

Printing 1 to 1000 without loop or conditionals

Why do I get a segmentation fault when writing to a "char *s" initialized with a string literal, but not "char s[]"?

C Segmentation Fault C Strings

When should I use mmap for file access?

C File Io Posix Mmap

Fast ceiling of an integer division in C / C++

C++C Algorithm Math

Why does `int ;` compile fine in C, but not in C++?

C++C Gcc Language Lawyer Variable Declaration

Fast way to generate pseudo-random bits with a given probability of 0 or 1 for each bit

C++C Algorithm Random Bit Manipulation

How to call machine code stored in char array?

C++C Linux Native Machine Code

How to create type safe enums?

C Enums Type Safety

How to properly add hex escapes into a string-literal?

"fatal error: bits/libc-header-start.h: No such file or directory" while compiling HTK

What is the best encryption library in C/C++?

C++C Encryption

C: pointer to struct in the struct definition

C Struct Pointers

Difference between void main and int main in C/C++?

C++C Function Standards Main

Getting IPV4 address from a sockaddr structure

what's the difference between the printf and vprintf function families, and when should I use one over the other?

What does a colon in a struct declaration mean, such as :1, :7, :16, or :32?

C++C Bit Fields

Why isn't C/C++'s "#pragma once" an ISO standard?

C++C Pragma Include Guards

How do I find the next multiple of 10 of any integer?

C Algorithm Math

Writing BMP image in pure c/c++ without other libraries

C++C Image Graphics Bmp

Could I ever want to access the address zero?

C++C Memory Pointers

Maximum memory which malloc can allocate

C Memory Management Operating System Malloc Cpu Architecture

How do I print a #defined constant in GDB?

C Gdb C Preprocessor

Dropping root privileges

In C, how is the main() method initially called?

C Operating System

Where is ptrdiff_t defined in C?

C Types Libc Stdint

How does C-- compare to LLVM?

C Compiler Construction Code Generation Llvm C Minus-Minus

Does C have references?

Why is my power operator (^) not working?

What's the difference between GNU99 and C99 (Clang)?

C Compiler Construction Option Clang

How to escape the % (percent) sign in C's printf

C Printf Format String

strdup() - what does it do in C?

C Function Strdup

what happens in the kernel during malloc?

C Linux Process Heap Memory System

What does posix_memalign/memalign do

C Memory Memory Pool

What is the maximum number of characters for a host-name in Unix?

C Unix Max Hostname

What is the maximum size of an array in C?

Launch Failed Binary not found Eclipse for C in Windows

C Windows Eclipse

error C2275 : illegal use of this type as an expression

C Visual Studio-2010 Winapi Service Compiler Errors

Passing struct to function

C Function Struct

Single, double quotes and sizeof('a') in C/C++

How to check if a given file descriptor stored in a variable is still valid?

C Linux Gcc File Descriptor

Representing EOF in C code?

C Character Ascii Eof

Size of stack and heap memory

C Memory Management Heap Memory Stack Memory

Are empty macro definitions allowed in C? How do they behave?

C C Preprocessor

How do get numbers to display as two digits in C?

Why use address of first element of struct, rather than struct itself?

Performance Tradeoff - When is MATLAB better/slower than C/C++

C++C Performance Matlab

What is IACA and how do I use it?

C++C Performance Assembly Iaca

Compiler not detecting obviously uninitialized variable

Why does the complement behave differently through printf?

C Variables Types Bitwise Operators Unsigned Char

What is the difference between .o, .a, and .so files?

C++C Shared Libraries Static Libraries

When should I pass or return a struct by value?