STRCHR(3) Linux Programmer's Manual STRCHR(3)
strchr, strrchr, strchrnul - locate character in string
char *strchr(const char *s, int c);
char *strrchr(const char *s, int c);
#define _GNU_SOURCE /* See feature_test_macros(7) */
char *strchrnul(const char *s, int c);
The strchr() function returns a pointer to the first occurrence of the character c in the
The strrchr() function returns a pointer to the last occurrence of the character c in the
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 charac-
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.
strchrnul() first appeared in glibc in version 2.1.1.
strchr() and strrchr() are in SVr4, 4.3BSD, C89, C99. strchrnul() is a GNU extension.
index(3), memchr(3), rindex(3), string(3), strlen(3), strpbrk(3), strsep(3), strspn(3),
strstr(3), strtok(3), wcschr(3), wcsrchr(3)
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project, and information about reporting bugs, can be found at
GNU 2012-04-24 STRCHR(3)