strpbrk—find characters in string #include <string.h>
char *strpbrk(const char *s1, const char *s2);
Description
This function locates the first occurence in the string
pointed to by s1 of any character in string pointed to by
s2 (excluding the terminating null character).
Returns
strpbrk returns a pointer to the character found in s1, or a
null pointer if no character from s2 occurs in s1.
Portability
strpbrk requires no supporting OS subroutines.