x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
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.
ATTRIBUTES
Multithreading (see pthreads(7))
The strchr(), strrchr(), and strchrnul() functions are thread-safe.
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 3.69 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
GNU 2014-01-20 STRCHR(3)
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