public static void Show()
        {
            ExDeviderV2.AdditionalEx();

            Console.WriteLine(Calculator.Add("1", 2));
            Console.WriteLine(Calculator.Div(1, 3));
            Console.WriteLine(Calculator.Div(1, 0));
            Console.WriteLine(Calculator.Mult(2, 2.5));
            Console.WriteLine(Calculator.Sub(2, 10));
        }
        static void Main(string[] args)
        {
            ExDeviderV2.AdditionalEx();//--------------------------------------------------------------------------------------------------------------------------

            Point test = new Point(1, 2, 3) + new Point(3, 3, 3);

            Console.WriteLine(test.X + " " + test.Y + " " + test.Z);

            //--------------------------------------------------------------------------------------------------------------------------

            Ex2.Ex2Pr.Show();

            Ex3.Ex3Pr.Show();

            Ex4.Ex4Pr.Show();
        }