using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var queue = GetQueue();

        // Without LINQ

        int queueCount = queue.Count();

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

        {

            Console.WriteLine(queue.Dequeue());

        }

        queue.Enqueue("Enqueue1");

        queue.Enqueue("Enqueue2");

        // With LINQ

        while(queue.Any())

        {

            Console.WriteLine(queue.Dequeue());

        }

    }

    public static Queue<string> GetQueue()

    {

        var queue = new Queue<string>

        (

            new string[] {"Test1", "Test2", "Test3", "Test4"}

        );

        return queue;

    }

}