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

CStringHeader

C Problem Overview

I noticed that there was (at least on Mac OS X) both a <string.h> header and a <strings.h> header. man 3 string reveals that they contain different functions. Is there any reason for this?

C Solutions

Solution 1 - C

strings.h comes from the BSD branch in the unix evolution. Its content has been standardized by POSIX, but most of it is marked as legacy and can be easily replaced with other functions:

int    bcmp(const void *, const void *, size_t); /* LEGACY, see memcmp */
void   bcopy(const void *, void *, size_t); /* LEGACY, see memcpy, memmove */
void   bzero(void *, size_t); /* LEGACY, see memset */
int    ffs(int);
char  *index(const char *, int); /* LEGACY, see strchr */
char  *rindex(const char *, int); /* LEGACY, see strrchr */
int    strcasecmp(const char *, const char *);
int    strncasecmp(const char *, const char *, size_t);

Solution 2 - C

Typically <strings.h> just adds some useful but non-standard additional string functions to the standard header <string.h>. For maximum portability you should only use <string.h> but if you need the functions in <strings.h> more than you need portability then you can use <strings.h> instead of <string.h>.

Categories
Recommended C Solutions
Recommended String Solutions
Recommended Header Solutions

Previous Solution:

Add a fragment to the URL without causing a redirect?

JavascriptJqueryHash

Next Solution:

convert string into array of integers

Javascript

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionicktoofayView Question on Stackoverflow
Solution 1 - CAProgrammerView Answer on Stackoverflow
Solution 2 - CPaul RView Answer on Stackoverflow