using System;

​

namespace Test

{

    delegate void Greeter(string name);

    delegate string NameGetter();

​

    class Program

    {

        static void Greet(NameGetter nameGetter, Greeter greeter) {

            greeter(nameGetter());

        }

​

        static void Main(string[] args)

        {

            Greet(

                () => "Julia", 

                (string name) => Console.WriteLine($"Hey, {name}!"));

        }

    }

}

​