/* Exercise 2.5 from "The C programming language" book by K&R */

#include <stdio.h>

/* any - seek first position of any symb from s2 in s1 */
int any(char *s1, char *s2)
{
	int i, k;
	for (i = 0; s1[i] != '\0'; i++)
		for (k = 0; s2[k] != '\0'; k++)
			if (s1[i] == s2[k])
				return i;
	return -1;
}

int main(void)
{
	char s1[] = "yoyoajyujyujyc";
	char s2[] = "bc";
	printf("%d\n", any(s1,s2));
	return 0;
}