#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=NULL;
temp=p1;
p1=p2;
p2=temp;
}