index, rindex − locate character in string

#include <strings.h>

char *index(const char *s, int c);

char *rindex(const char *s, int c);

The index() function returns a pointer to the first occurrence of the character c in the string s.

The rindex() function returns a pointer to the last occurrence of the character c in the string s.

The terminating NULL character is considered to be a part of the strings.

The index() and rindex() functions return a pointer to the matched character or NULL if the character is not found.

BSD 4.3

memchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)