public static void Main() { Console.WriteLine("Welcome to Pierre's Bakery! Our specials today are Bread: Buy 2, get 1 free. A single loaf costs $5 & Pastry: Buy 1 for $2 or 3 for $5."); string purchase = ""; while (!(purchase == "NO")) { Console.WriteLine("How many loaves of Bread would you like?)"); string stringBreadInput = Console.ReadLine(); int breadInput = int.Parse(stringBreadInput); Bread newBread = new Bread(breadInput); newBread.AddToList(); Console.WriteLine("How many pastries would you like?"); string stringPastryInput = Console.ReadLine(); int pastryInput = int.Parse(stringPastryInput); Pastry newPastry = new Pastry(pastryInput); newPastry.AddToList(); int subtotalBread = newBread.CalculateCost(); int subtotalPastry = newPastry.CalculateCost(); int grandTotal = subtotalBread + subtotalPastry; Console.WriteLine("Your grand total is: $" + grandTotal); Console.WriteLine("Would you like more bread or pastry? Yes/No"); purchase = Console.ReadLine().ToUpper(); if (purchase == "YES") { } else if (!(purchase == "NO" || purchase == "YES")) { while (!(purchase == "NO" || purchase == "YES")) { Console.WriteLine("Please answer yes or no"); purchase = (Console.ReadLine()).ToUpper(); } } } }