// L-10 MCS 360 Wed 15 Sep 2010 : templated_swap.cpp

/* We introduce generic programming with a swap for any type T.
   Our function was called "MySwap" in order not to confuse
   with the swap of the STL algorithms. */

#include <iostream>
#include <string>
using namespace std;

template <typename T>
void MySwap ( T& x, T& y) // swaps x with y
{
   T z = x; x = y; y = z;
}

int main()
{
   cout << "swapping two integers..." << endl;
   int a = 2; int b = 3;
   cout << "before swap : a = " << a;
   cout << ", b = " << b << endl;
   MySwap(a,b);
   cout << " after swap : a = " << a;
   cout << ", b = " << b << endl;

   cout << "swapping two strings..." << endl;
   string s = "hello"; string t = "there";
   cout << "before swap : s = " << s;
   cout << ", t = " << t << endl;
   MySwap(s,t);
   cout << " after swap : s = " << s;
   cout << ", t = " << t << endl;
   
   return 0;
}