#include <stdio.h>

void swapValues(int *first,int *second)
{
int temp;

temp = *first;
*first = *second;
*second = temp;
}

void swapPointers(int **first,int **second)
{
int *temp;

temp = *first;
*first = *second;
*second = temp;
}

main()
{
int a,b,*x,*y;

x = &a;
y = &b;
scanf("%d %d",x,y);
printf("%p %p %d %d %p %p\n",x,y,*x,*y,&x,&y);
swapValues(x,y);
printf("%p %p %d %d %p %p\n",x,y,*x,*y,&x,&y);
swapPointers(&x,&y);
printf("%p %p %d %d %p %p\n",x,y,*x,*y,&x,&y);
}