index - First occurrence of a character in a string

Definition	#include <string.h> char *index(const char *s, int c); index searches for the first occurrence of character c in string s and returns a pointer to the located position in s if successful. The terminating null byte (\0) is also treated as a character.
Return val.	Pointer to the position of c in string s
		if successful.
	NULL pointer	if c is not contained in string s.
Note Example	The index and strchr functions are equivalent. Find the first ’f’: #include <string.h> #include <stdio.h> int main(void) { char *s = "What ffun in the sun!"; printf("%s\n", s); printf("Where is the error? %s\n", index(s, 'f')); return 0; }
See also	rindex, strchr