Method - call by reference using C# Language

using System;

public class exam

 {

    public static void swap(ref int a,ref int b)

     {

         int t;

         t = a;

         a = b;

         b = t;

         Console.WriteLine("\nA value is : {0}",a);

         Console.WriteLine("\nB value is : {0}",b);

     }



     public static void Main()

       {

          int x,y;



           Console.Write("\nEnter the A value : ");

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



           Console.Write("\nEnter the B value : ");

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

           Console.WriteLine("\n"); 



           Console.WriteLine("The Given values are...");

           Console.WriteLine("\nA value is : {0}",x);

           Console.WriteLine("\nB value is : {0}",y);



           Console.WriteLine("\n"); 

           Console.WriteLine("After the Swap, the values are...");

           swap(ref x,ref y);

       }

    }