using uCalcSoftware; var uc = new uCalc(); // Get the infix (subtraction) operator and check its operand count var infixOp = uc.ItemOf("-", ItemIs.Infix); Console.Write("Infix '-' operator has "); Console.Write(infixOp.Count); Console.WriteLine(" operand(s)."); // Get the prefix (negation) operator var prefixOp = uc.ItemOf("-", ItemIs.Prefix); Console.Write("Prefix '-' operator has "); Console.Write(prefixOp.Count); Console.WriteLine(" operand(s).");