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swap.cpp


// Program for Exercise 21
// (NDE, 2013-01-19)
#include <iostream>
using namespace std;
void swap(int x, int y)
{
  int tmp = x;
  x = y;
  y = tmp;
}
int main()
{
  int first, second;
  cout << "Enter first integer: ";
  cin >> first;
  cout << "Enter second integer: ";
  cin >> second;
  cout << "Before swapping: " << first << " " << second << endl;
  swap(first, second);
  cout << "After swapping: " << first << " " << second << endl;
  return 0;
}