Manpage of STRCHR

STRCHR

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index
 

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 cin the string s.

The strrchr() function returns a pointer to the last occurrence of the character cin the string s.

The strchrnul() function is like strchr() except that if cis 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 cis specified as aq\0aq, 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).
InterfaceAttributeValue
strchr(), strrchr(), strchrnul() Thread safetyMT-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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
VERSIONS
ATTRIBUTES
CONFORMING TO
SEE ALSO

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