using System;

public class Program

{

    public class Razmiana

    {

        public static void swap(ref double x,ref double y)

        {

            double c;

            c=x;

            x = y;

            y=c;

            Console.WriteLine("Novata stoynost na x=" + x);

            Console.WriteLine("Novata stoynost na y=" +y);

        }

    }   

    public static void Main()

    {

        double a=5, b=6;

        Razmiana.swap(ref a, ref b);

    }

}

​