Boxing2.Point.Change C# (CSharp) 메소드

        public void Change(Int32 x, Int32 y)
        {
            m_x = x; m_y = y;
        }
        public override String ToString()

 public static void Main3()
 {
     Point p = new Point(1, 1);
     Console.WriteLine(p);
     p.Change(2, 2);
     Console.WriteLine(p);
     Object o = p;
     Console.WriteLine(o);
     ((Point)o).Change(3, 3);
     Console.WriteLine(o);
 }