strpbrk, strppbrk - return first (last) occurrence in string of
character in set
char *strpbrk (string, set)
char *strppbrk (string, set)
Strpbrk (strppbrk) returns a pointer to the first (last)
occurrence in string of any of the characters in set, or NULL if
there are no characters from set that are in string. Both string
and set point to null terminated strings.
Strpbrk and strppbrk returns NULL if there is no occurrence of a
character from set in string.
Strpbrk and strppbrk are present only on systems that do not
already have them in their standard C library.