有下面程序代码： Private Sub Command1_Click() Dim x As Integer, s As Integer x = 1 For k = 1 To 3 x = x + 1

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问题有下面程序代码：
Private Sub Command1_Click()
Dim x As Integer, s As Integer
x = 1
For k = 1 To 3
      x = x + 1
      proc x
      s = s + x
Next k
Print s
End Sub
Private Sub proc(ByVal a As Integer)
Static x As Integer
x = x + 1
a = a + x
End Sub
程序运行后，单击命令按钮Command1，输出结果是

选项 A、6
B、9
C、15
D、19

答案B

解析 ByVal表示参数传递时是值传递。不改变实参的值。Command1_Click事件中proc x语句不改变x的值。因此可直接按照for循环的规律计算s的值。选B）。

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本试题收录于：二级VB题库NCRE全国计算机二级分类