using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter two values");

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

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

​

  // Code to swap 'x' and 'y'

  x = x + y;  // x now becomes 15

  y = x - y;  // y becomes 10

  x = x - y;  // x becomes 5

        Console.WriteLine("after swap");

        Console.WriteLine("x : {0}",x);

        Console.WriteLine("y : {0}",y);

    }

}