// C++ Swap Number
#include <iostream>
using namespace std;

int main()
{
    int a = 5, b = 10, c = 5, d = 10, temp;

    cout << "Swap Numbers (Using Temporary Variable)" << "\nBefore swapping." << endl;
    cout << "a = " << a << ", b = " << b << endl;

    temp = a;
    a = b;
    b = temp;

    cout << "\nAfter swapping." << endl;
    cout << "a = " << a << ", b = " << b << endl;

    cout << "\nSwap Numbers Without Using Temporary Variable" << "\nBefore swapping." << endl;
    cout << "a = " << c << ", b = " << d << endl;

    c = c + d;
    d = c - d;
    c = c - d;

    cout << "\nAfter swapping." << endl;
    cout << "a = " << c << ", b = " << d << endl;

    return 0;
}