ExchangeValues

using System;

//Declare two integer variables a and b and assign them with 5 and 10 and after that exchange
//their values. Print the variable values before and after the exchange

class ExchangeValues
{
    static void Main()
    {
        int firstValue = 5;
        Console.WriteLine("a = {0}", firstValue);

        int secondValue = 10;
        Console.WriteLine("b = {0}",secondValue);

        firstValue = firstValue + secondValue; // a = 15

        secondValue = firstValue - secondValue; // b = 5
        Console.WriteLine("b = {0}", secondValue);

        firstValue = firstValue - secondValue; // a = 10
        Console.WriteLine("a = {0}", firstValue);

    }
}