static void Main(string[] args)
        {

            string numberOfApples = "0";

            Console.WriteLine("How many apples do you want");
            numberOfApples = Console.ReadLine();

            while(int.Parse(numberOfApples) >= 0)
            {
                Console.WriteLine("Do you need another bag");
                string response = Console.ReadLine();
                if (response == "yes" && int.Parse(numberOfApples) == 10)
                {
                    Console.WriteLine("You will need 2 bags");
                    Console.WriteLine("Next please!");
                }
            }
            Console.ReadLine();
        }