using System;

​

​

interface IFriend 

{

    void Friendly();

}

​

interface IEmployee

{

    void Friendly();

    void Responsibility();

    void Professionalism();

}

​

interface IFamilyMember

{

    void Friendly();

    void Responsibility();

}

​

class Person:IFriend,IEmployee,IFamilyMember

{

    public void Freindly(){

        Console.WriteLine("Hello World");

    }

    public void Responsibility(){

    }

    public void Professionalism(){

    }

​

}

​

public class Program

{

    public static void Main()

    {

        Person p1  =new Person();

        IFamilyMember _mem1 = p1;

        IFriend _mem2 = p1;

        IEmployee _mem3 = p1;

    }

}