// Program to demonstrate function templates for a swap function.
// Assignment-09
// swptmplt.cpp, Author - Krishna Kumar Khatri.

// Uncomment ONLY the following line if you are using Turbo/Borland compiler.
// #define TC
#ifdef TC
	#include <iostream.h>
#else
	#include <iostream>
	using namespace std;
#endif
#include <conio.h>  // For getch.

template <class T>
void my_swap(T& a, T& b)
    { a = a - b; b = a + b; a = b - a; }

int main()
{
    #ifdef TC
        clrscr();
    #endif
    int a = 1, b = 2;
    char x = 'x', y = 'y';
    double p = 2.8, q = 8.2;
    
    cout << "Values before swap, " << endl;
    cout << "a = " << a << ", b = " << b << ", ";
    cout << "x = " << x << ", y = " << y << ", ";
    cout << "p = " << p << ", q = " << q << endl;
    
    swap(a, b);
    swap(x, y);
    swap(p, q);
    cout << endl << "Values after swap, " << endl;
    cout << "a = " << a << ", b = " << b << ", ";
    cout << "x = " << x << ", y = " << y << ", ";
    cout << "p = " << p << ", q = " << q << endl;

    cout << endl << endl << "Program over. Press any key to exit...";
    getch();
    return 0; // Successful termination.
}