#include <iostream>

using namespace std;

void swap(int a,int b)
{
    int c=a;
    a = b;
    b = c;
    cout << &a << &b << endl;
}

int main()
{
    int a = 1,b = 2;
    swap(a,b);
    cout << &a << &b << endl;

    return 0;
}