在窗体上画一个名称为Command1的命令按钮和3个名称分别为Label1, Label2, Label3的标签,然后编写如下代码:
Private x As Integer
Private Sub Command1_Click()
Static y As Integer
Dim z As Integer
n= 10
z = n + z
y = y + z
x = x + z
Label1.Caption = x
Label2.Caption = y
Label3.Caption = z
End Sub
运行程序,连续三次单击命令按钮后,则3个标签中显示的内容分别是
A.10 10 10
B.30 30 30
C.30 30 10
D.10 30 30