UC知道vb问题额·········
来源：百度知道 编辑：UC知道 时间：2024/05/04 17:13:12
Private Function sum(n As Integer)
Static t As Integer
Dim i As Integer
For i = 1 To n
t = t + 1
Next i
End Function
Private Sub form_click()
s = sum(1) + sum(2) + sum(3)
Print "s="; s
End Sub
单击窗体将输出？
Static t As Integer
Dim i As Integer
For i = 1 To n
t = t + 1
Next i
End Function
Private Sub form_click()
s = sum(1) + sum(2) + sum(3)
Print "s="; s
End Sub
单击窗体将输出？
Static t As Integer------t是静态变量
在Function 函数中sum 根本没有定义值，它与n根本没有关系，sum=0,所以单击窗体将输出s=0
输出结果是：
s= 0
一般输出s=0
如果要求变量声明的话s会提示未定义