#include <stdio.h>
void inter(int*u,int *v);
int main(void)
{
    int x=5,y =6;
    
    printf("%d %p\n",x,&x);
    printf("%d %p\n",y,&y);
    inter(&x,&y);
     printf("%d %p\n",x,&x);
     printf("%d %p\n",y,&y);
	return 0;
}
void inter(int *u,int *v)
{
    int temp;
    temp=*u;
    *u=*v;
    *v=temp;
}