#include <stdio.h>
#include <string.h>
int main()
{
int fun(char *p1,char *p2);
char s1[20],s2[20];
char *p1=
#include <stdio.h>
#include <string.h>
int main()
{
int fun(char *p1,char *p2);
char s1[20],s2[20];
char *p1=