1STRCHR(3)                  Linux Programmer's Manual                 STRCHR(3)
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NAME

6       strchr, strrchr, strchrnul - locate character in string
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SYNOPSIS

9       #include <string.h>
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11       char *strchr(const char *s, int c);
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13       char *strrchr(const char *s, int c);
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15       #define _GNU_SOURCE
16       #include <string.h>
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18       char *strchrnul(const char *s, int c);
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DESCRIPTION

21       The  strchr() function returns a pointer to the first occurrence of the
22       character c in the string s.
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24       The strrchr() function returns a pointer to the last occurrence of  the
25       character c in the string s.
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27       The strchrnul() function is like strchr() except that if c is not found
28       in s, then it returns a pointer to the null  byte  at  the  end  of  s,
29       rather than NULL.
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31       Here "character" means "byte"; these functions do not work with wide or
32       multi-byte characters.
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RETURN VALUE

35       The strchr() and strrchr() functions return a pointer  to  the  matched
36       character or NULL if the character is not found.
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38       The strchrnul() function returns a pointer to the matched character, or
39       a pointer to the null byte at the end of s (i.e., s+strlen(s))  if  the
40       character is not found.
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VERSIONS

43       strchrnul() first appeared in glibc in version 2.1.1.
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CONFORMING TO

46       strchr() and strrchr() are in SVr4, 4.3BSD, C89, C99.  strchrnul() is a
47       GNU extension.
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SEE ALSO

50       index(3), memchr(3), rindex(3), strlen(3), strpbrk(3), strsep(3),  str‐
51       spn(3),    strstr(3),    strtok(3),    wcschr(3),    wcsrchr(3),   fea‐
52       ture_test_macros(7)
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COLOPHON

55       This page is part of release 3.22 of the Linux  man-pages  project.   A
56       description  of  the project, and information about reporting bugs, can
57       be found at http://www.kernel.org/doc/man-pages/.
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61GNU                               2008-08-11                         STRCHR(3)
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