#include<stdio.h>
int main()
{
	void swap(int *p1,int *p2);
	int a,b;
	int *pointer_1,*pointer_2;
	printf("please enter a and b:");
    scanf("%d,%d",&a,&b);
	pointer_1=&a;
	pointer_2=&b;
	if(a<b) swap(pointer_1,pointer_2);
	printf("max=%d,min=%d\n",a,b);
	return 0;
}
void swap(int *p1,int *p2)
{int temp;
temp=*p1;
*p1=*p2;
*p2=temp;
}