using System;

public class Program

{

    public static void Main(String[] args)

    {

        int firstnum, secondnum, temp;

            Console.WriteLine("input first num:");

            firstnum = int.Parse(Console.ReadLine());

            Console.WriteLine("input second num:");

            secondnum = int.Parse(Console.ReadLine());

            Console.WriteLine("Before Swapping");

            Console.WriteLine("first num ="+firstnum);

            Console.WriteLine("second num ="+secondnum);

            temp=firstnum;

            firstnum=secondnum;

            secondnum=temp;

            Console.WriteLine("Values after swapping are:");

            Console.WriteLine("first num="+firstnum);

            Console.WriteLine("second num="+secondnum);

    }

}