using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        MySingleton s1 = MySingleton.Instance();        

        MySingleton s2 = MySingleton.Instance();

        if(s1==s2)

            Console.WriteLine("The objects are same");

    }

}

​

public class MySingleton

{

    private static MySingleton _instance;

    private MySingleton()

    {

    }

​

    public static MySingleton Instance()

    {

        if (_instance == null)

            _instance = new MySingleton();

        return _instance;

    }

}