Private Sub Command1Click()

  Dim a(-1 To 8) As Integer

  Dim i As Integer

  For i = -1 To 8

    a(i) = i * i

  Next i

  List1.AddItem Str (a(i))

End Sub

运行程序，单击命令按钮Command1后，出现的错误提示为

Private Sub Command1_Click()

  Dim s As String, i As Integer

  s = ""

  For i = 1 To 10 Step 2

      s = Str(i) + s

  Next i

  Text1.Text = s

End Sub

运行程序，单击命令按钮Command1后，在文本框Text1中显示的内容为（    ）

Private Sub Command1_Click()

 Dim i As Integer

 Dim a(10)As Integer    ‘①

 For i=1 To 10    ‘②

  a(i)=Rnd* 100    ‘③

 Next i

 Label1.Caption=Str(a(i))    ‘④

End Sub

m=0:n=0

For i=1 to 100

    If i mod 3="0" then

        m=m+1

    Else

        n=n+1

next i

print m,n