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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌─────────────────────────────────┬───────────────┬─────────┐
       │Interface                        │ Attribute     │ Value   │
       ├─────────────────────────────────┼───────────────┼─────────┤
       │strchr(), strrchr(), strchrnul() │ Thread safety │ MT-Safe │
       └─────────────────────────────────┴───────────────┴─────────┘

CONFORMING TO

       strchr(), strrchr(): POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.

       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

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