using System;

public class Program

{

    public static void Main()

    {

        Manager m = new Manager();

        Console.WriteLine(m.GetName());

        Console.WriteLine(m.GetSalary());

        Console.WriteLine(m.GetDesignation());

        Console.WriteLine(m.GetAddress());

    }

}

​

public interface IEmployee

{

    int GetSalary();

}

​

public class Manager : IEmployee

{

    public string GetName()

    {

        return "Kiran More";

    }

    public int GetSalary()

    {

        return 1000;

    }

}

​

public static class EmployeeExtensions

{

    public static string GetDesignation(this Manager m)

    {

        return "Manager";

    }

    public static string GetAddress(this IEmployee e)

    {

        return "Pune";

    }

}