private static Task RunClassInstanceSampleAsync() { while (true) { Console.WriteLine("Please, please arg 1:"); var arg1 = Console.ReadLine(); if (arg1 == "exit") { break; } Console.WriteLine("Please, please arg 2:"); var arg2 = Console.ReadLine(); if (arg2 == "exit") { break; } try { Console.ForegroundColor = ConsoleColor.Yellow; MyApi apiInstance = new MyApi(); double res = apiInstance.Divide(int.Parse(arg1), int.Parse(arg2)); Console.WriteLine($"Result of {arg1}/{arg2} = {res}"); } catch (Exception ex) { Console.WriteLine("Your input is not the best. Pls. try again :)"); } finally { Console.ResetColor(); } } return(Task.CompletedTask); }