strpbrk: returns a pointer to the first character in *str1 that matches any character in *str2
//Declaration: char *strpbrk(const char *str1, const char *str2);
//Return: returns a pointer to the first character in *str1 that matches any character in *str2.
#include <stdio.h>
#include <string.h>
int main(void)
{ char *p;
p = strpbrk("this is a test", " absj");
printf(p);