//prompt user to increase/decrease the cost of one cup of lemonade public void DetermineCostOfLemonade(Store store) { int input = 0; do { Console.ForegroundColor = ConsoleColor.Yellow; Console.WriteLine($"\n\n1: Increment 10 cents\t2:Decrement 10 cents\t\t0:Finish\t\tCurrent lemonade price: ${ store.DisplayCostOfLemonade().ToString("0.00")}"); Console.ResetColor(); input = PromptInputNumber("What would you like to do: ", TestNumber); if (input == 1) { store.IncreaseCharge(); } else if (input == 2) { store.DecreaseCharge(); } else { Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine("Not a valid option!"); Console.ResetColor(); } } while (input != 0); }