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

NAME
       strchr, strrchr, strchrnul - locate character in string
SYNOPSIS
       #include <string.h>
       char *strchr(const char *s, int c);
       char *strrchr(const char *s, int c);
       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <string.h>
       char *strchrnul(const char *s, int c);
DESCRIPTION
       The  strchr() function returns a pointer to the first occurrence of the
       character c in the string s.
       The strrchr() function returns a pointer to the last occurrence of  the
       character c in the string s.
       The strchrnul() function is like strchr() except that if c is not found
       in s, then it returns a pointer to the null  byte  at  the  end  of  s,
       rather than NULL.
       Here "character" means "byte"; these functions do not work with wide or
       multibyte characters.
RETURN VALUE
       The strchr() and strrchr() functions return a pointer  to  the  matched
       character  or NULL if the character is not found.  The terminating null
       byte is considered part of the string, so that if  c  is  specified  as
       '\0', these functions return a pointer to the terminator.
       The strchrnul() function returns a pointer to the matched character, or
       a pointer to the null byte at the end of s (i.e., s+strlen(s))  if  the
       character is not found.
VERSIONS
       strchrnul() first appeared in glibc in version 2.1.1.
CONFORMING TO
       strchr() and strrchr() are in SVr4, 4.3BSD, C89, C99.  strchrnul() is a
       GNU extension.
SEE ALSO
       index(3),  memchr(3),  rindex(3),  string(3),  strlen(3),   strpbrk(3),
       strsep(3), strspn(3), strstr(3), strtok(3), wcschr(3), wcsrchr(3)
COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU                               2012-04-24                         STRCHR(3)