using uCalcSoftware; var uc = new uCalc(); // Retrieve the built-in message for a specific error code, without triggering an error. Console.WriteLine($"Generic 'Undefined Identifier' message: {uc.Error.GetMessage(ErrorCode.Undefined_Identifier)}"); // Now, trigger a specific error by using an undefined variable. uc.EvalStr("MyUndefinedVar + 5"); // Check the message and number for the last error that occurred. Console.WriteLine($"Last error message: {uc.Error.Message}"); Console.WriteLine($"Last error number: {(int)uc.Error.Code}");