阅读下列程序：
Option Base 1
Private Sub Form Click( )
Dim x(3, 3)
For j = 1 to 3
For k = 1 to 3
If j = k then x(j, k) = 1
If j ＜ ＞ k then x(j, k) =3
Next k
Next j
Call fun(x( ) )
End Sub
Private Sub fun(a( ) )
For j = 1 to 3
For k = 1 to 3
Print a(j, k);
Next k
Next j
End Sub
运行程序时，输出的结果是 【5】 。