static void Main(string[] args) { try { InputConverter inputConverter = new InputConverter(); CalculatorEngine calculatorEngine = new CalculatorEngine(); Console.WriteLine("Input first number for calculation"); double firstnumber = inputConverter.InputToNum(Console.ReadLine()); Console.WriteLine("+, -, *, /"); string operation = Console.ReadLine(); Console.WriteLine("Input second number for calculation"); double secondnumber = inputConverter.InputToNum(Console.ReadLine()); double result = calculatorEngine.Calculate(operation, firstnumber, secondnumber); Console.WriteLine(result); } catch (Exception ex) { Console.WriteLine(ex.Message); } }