public void Run() { VendingMachine vendingMachine = new VendingMachine(); vendingMachine.StartVendingMachine(); while (true) { String selection = (string)ui.PromptForSelection(MAIN_MENU_OPTIONS); if (selection == MAIN_MENU_OPTION_DISPLAY_ITEMS) { vendingMachine.DisplayVendingMachine(); } else if (selection == MAIN_MENU_OPTION_PURCHASE) { vendingMachine.SubPurchaseMenuStart(); } else if (selection == MAIN_MENU_OPTION_FINISHED) { Console.Clear(); break; } } }