using uCalcSoftware; var uc = new uCalc(); Console.WriteLine($"Square root of 81 is: {uc.Eval("Sqrt(81)")}"); Console.WriteLine($"Is 10 greater than 5? {uc.EvalStr("IIf(10 > 5, 'Yes', 'No')")}"); Console.WriteLine($"String length: {uc.Eval("Length('uCalc rocks!')")}");