using System;

using System.Device

public class Program

{

    public static void Main()

    {

        var sCoord = new GeoCoordinate(sLatitude, sLongitude);

var eCoord = new GeoCoordinate(eLatitude, eLongitude);

​

return sCoord.GetDistanceTo(eCoord);

        Console.WriteLine("Hello World");

    }

}