static void Main(string[] args)
    {
        // Declare the first UnaryOperator object.
        UnaryOperator opr1 = new UnaryOperator(20, 30);
        // Declare the second UnaryOperator object.
        UnaryOperator opr2 = new UnaryOperator(10, 40);
        // Add them using the overloaded version of the + operator
        UnaryOperator result = opr1 + opr2;

        // Show the results
        result.ShowData();
        Console.ReadLine();
    }