static void Main(string[] args)
{
var paymentOption = new PaymentOption();
DrinkLogic.DisplayDrinks();
FoodLogic.DisplayFoods();
var customer1 = new UserType("Ben", 2);
var UserI = new UserInterfaceLogic(customer1);
var items = UserI.BuyItems();
CalculationLogic cal = new CalculationLogic(items, customer1);
Console.WriteLine("Your total cost is :" + cal.CalculateFinalCost());
StoreLogic.CheckQuantity(4);
paymentOption.PayOption(cal.CalculateFinalCost());
Console.ReadKey();
}