using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Demo d= new Demo();

        d.Fun();//This calls the implicit method

        ((IImpl)d).Fun();//This calls the explicit method

    }

}

interface IImpl

{

    void Fun();

    //public void Fun2();

    //The 'public' modifier is invalid for a interface method

    //You can make only the method public,private,etc.. only in it's implementation

}

public class Demo:IImpl

{

    public void Fun()//Notice 'public' can be used here

    {

        Console.WriteLine("Inside Demo");       

    }

    void IImpl.Fun()//Cannot use 'public' here,because explicit implementation

    {

        Console.WriteLine("Inside explicit implementation");

    }

}