Do……Loop While a <= 0是怎样被执行的?
在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程:
Private Sub Command1_Click()
Dim a As Integer, s As Integer
a = 8
s = 1
Do
s = s + a
a = a-1
Loop While a <= 0
Print s; a
End Sub
程序运行后,单击命令按钮,则窗体上显示的内容是
A) 7 9 B) 34 0
C) 9 7 D)死循环
循环执行多少次?每次的s和a分别是什么值?