| strrchr(3P, 3p) | string scanning operation |
| strchr, strchrnul, strrchr(3) | locate character in string |
| string, stpcpy, index, rindex, strcasecmp, strcat, strchr, strcmp, strcoll, strcpy, strcspn, strdup, strfry, strlen, strncasecmp, strncat, strncmp, strncpy, strpbrk, strrchr, strsep, strspn, strstr, strtok, strxfrm(3) | string operations |
| strchr(3) | Library Functions Manual | strchr(3) |
strchr, strrchr, strchrnul - locate character in string
Standard C library (libc, -lc)
#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);
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.
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.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| strchr (), strrchr (), strchrnul () | Thread safety | MT-Safe |
memchr(3), string(3), strlen(3), strpbrk(3), strsep(3), strspn(3), strstr(3), strtok(3), wcschr(3), wcsrchr(3)
| 2023-07-20 | Linux man-pages 6.05.01 |