25. Очередь в магазине

using System;
using System.Collections.Generic;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int cashBox = 0;

            Random random = new Random();
            Queue<int> checkBuyers = new Queue<int>();
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));
            checkBuyers.Enqueue(random.Next(1000));

            BuyProduct(checkBuyers, ref cashBox);

            Console.WriteLine($"Итого магазин заработал {cashBox}$");
            Console.ReadKey();
        }

        static void BuyProduct(Queue<int> checkBuyers, ref int cashBox)
        {
            int clientNumber = 1;
            while (checkBuyers.Count > 0)
            {
                Console.WriteLine($"Сумма покупки {clientNumber} покупателя = {checkBuyers.Peek()}$");
                Console.WriteLine($"Игото в кассе {cashBox += checkBuyers.Dequeue()}$");
                clientNumber++;

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


    }
}