static void Main() { var myCalculatorService = new InterestCalculatorService(); Console.Beep(); Console.WriteLine("****************Welcome to Interest Calculator Application*************************"); Console.WriteLine("Please provide your balance: "); try { var balance = Convert.ToDouble(Console.ReadLine()); var interest = myCalculatorService.CalculateInterest(balance); Console.WriteLine("Your interest on your balance is :" + interest); } catch (Exception) { Console.WriteLine("Balance is invalid, please provide a valid balance."); } Console.ReadLine(); }