#include <string.h>
main()
{
char *s="0123456789012345678901234567890";
char *p;
p=strpbrk(s,"a1 839"); /*1會最先在s字符串中找到*/
printf("%s\n",p);
p=strpbrk(s,"4398");/*3 會最先在s 字符串中找到*/
printf("%s\n",p);
}