// Swapping two values
#include <iostream>
using namespace std;

void swap(int& x, int& y){
  int z = x;
  x = y;
  y = z;
}

int main()
{
  int x = 22, y = 33;

  cout << "Values before swapping: " << x << " " << y << endl;
  swap (x, y);
  cout << "Values after  swapping: " << x << " " << y << endl;

  return 0;
}