QueueStore

gistfile1.txt

using System;
using System.Collections.Generic;

namespace QueueStore
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int cashRegister = 0;

            Queue<int> purchases = new Queue<int>(new[] { 100, 200, 300, 400, 500 });

            while (purchases.Count > 0)
            {
                cashRegister += purchases.Dequeue();

                Console.WriteLine(cashRegister);
                Console.ReadKey();
                Console.Clear();
            }

            Console.WriteLine(cashRegister);
        }
    }
}