using System;

using System.Collections.Generic;

public class Program

{

    public static Queue<string> messages = new Queue<string>();

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        messages.Enqueue("Hello Thomas");

        messages.Enqueue("How are you");

        messages.Enqueue("Very nice");

        if (messages.Count >= 3)

        {

            messages.Dequeue();

        }

        Console.WriteLine(messages.Peek());

        Test();

    }

    static void Test(){

        messages.Clear();

        for(int i = 0; i < 10; i++)

            messages.Enqueue("China numba: " + i);

        while(messages.Count > 3)

            messages.Dequeue();

        Console.WriteLine(messages.Dequeue());

        Console.WriteLine(messages.Dequeue());

        Console.WriteLine(messages.Dequeue());

        // Queue is now empty

    }

}