// bad swap functions using overloading:
//
//  1. fix using reference parameters
//
//  2. enhance using template, test with string args
//
#include <iostream>
using namespace std;

// overloading:
//
void swap( int a, int b) { int c = a; a = b; b = c; }

void swap( double a, double b) { double c = a; a = b; b = c; }

int main()
{
  int i = 1, j = 2;
  cout << i << " " << j << endl;
  swap( i, j);
  cout << i << " " << j << endl;

  double x = 3.3, y = 4.4;
  cout << x << " " << y << endl;
  swap( x, y);
  cout << x << " " << y << endl;
}