const int x=1;
    short y;
    object z;
    z=y=x;

    //請問下面的輸出是什么?
    Console.WriteLine(z.GetType().ToString());

class C
 {
     private string x;
     public string X
     {
         get { return x ?? ""; }
         set { x = value; }
     }
 }

static void Main()
{
    C c = new C();
    object z;
    z = c.X = null;

    //下面兩句話輸出什么
    System.Console.WriteLine(z == null);
    System.Console.WriteLine(c.X == null);
}