redhat man page for index

INDEX(3)						     Linux Programmer's Manual							  INDEX(3)

NAME
       index, rindex - locate character in string

SYNOPSIS
       #include <strings.h>

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

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

DESCRIPTION
       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.

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

CONFORMING TO
       BSD 4.3

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

GNU
								    1993-04-12								  INDEX(3)