using System;

public interface A

{ void Metoda1();

}

public interface B : A

    {

void Metoda2();

void Metoda3();

    }

​

public class Afisare : B

{ public void Metoda1() {Console.WriteLine(1);}

public void Metoda2() {Console.WriteLine(2);}

public void Metoda3() {Console.WriteLine(3);}

​

}

public class Program

{

    public static void Main()

    {

        Afisare x;

        x=new Afisare();

        x.Metoda2();

    }

}