using System;

public class Program

{

    public static void Main()

    {

        var first = "Hello ";

        var second = "Hello ";

        var name = "Ivan";

        var firstGreeting = first + name;

        var secondGreeting = second + name;

        Console.WriteLine("---------");

        Console.WriteLine("fist == second: ");

        Console.WriteLine(first == second);

        Console.WriteLine("fist MyEqual second");

        Console.WriteLine( MyEqual(first, second));

        Console.WriteLine("firstGreeting == secondGreeting");

        Console.WriteLine(firstGreeting == secondGreeting);

        Console.WriteLine("firstGreeting MyEqual secondGreeting");

        Console.WriteLine( MyEqual(firstGreeting, secondGreeting));

        Console.WriteLine("---------");

    }

    static bool MyEqual<T>(T first, T second) where T: class

    {

        return first == second;

    }

}