CSharp_ObjectType.Program.Main C# (CSharp) Метод

        static void Main(string[] args)
        {
            object a;
            a = 1;
            Console.WriteLine(a);
            Console.WriteLine(a.GetType());
            Console.WriteLine(a.ToString());

            a = new A();
            A classRef;
            classRef = (A)a;
            Console.WriteLine(classRef.i);

            Console.ReadKey();
        }