// This program demonstrates the swapVars function template.
#include <iostream>
using namespace std;

template <class T>
void swapVars(T &var1, T &var2)
{
   T temp;

   temp = var1;
   var1 = var2;
   var2 = temp;
}

int main()
{
   char firstChar, secondChar;       // Two chars
   int firstInt, secondInt;          // Two ints
   double firstDouble, secondDouble; // Two doubles

   // Get and swapVars two chars
   cout << "Enter two characters: ";
   cin >> firstChar >> secondChar;
   swapVars(firstChar, secondChar);
   cout << firstChar << " " << secondChar << endl;

   // Get and swapVars two ints
   cout << "Enter two integers: ";
   cin >> firstInt >> secondInt;
   swapVars(firstInt, secondInt);
   cout << firstInt << " " << secondInt << endl;

   // Get and swapVars two doubles
   cout << "Enter two floating-point numbers: ";
   cin >> firstDouble >> secondDouble;
   swapVars(firstDouble, secondDouble);
   cout << firstDouble << " " << secondDouble << endl;
   return 0;
}