Copyright 1993 David Metcalfe (firstname.lastname@example.org) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this ...
NAMEstrchr, strrchr, strchrnul - locate character in string
#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);
DESCRIPTIONThe 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 VALUEThe 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 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.
VERSIONSstrchrnul() first appeared in glibc in version 2.1.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|strchr(), strrchr(), strchrnul()||Thread safety||MT-Safe|
CONFORMING TOstrchr(), strrchr(): POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
strchrnul() is a GNU extension.