Private Sub Command1_Click()
Dim s As String, a As String, t As String
s = Text1.Text: t = ""
For i = 1 To Len(s)
a = Mid(s, i, 1)
If a >= "0" And a <= "9" Then
t = t + a
ElseIf a = "!" Then
t = ""
ElseIf t <> "" Then
List1.AddItem t
End If
Next i
End Sub
执行程序时,在文本框 Text1 中输入“12+34=46!789ok”(不包括双引号),单击按钮Command1后,在列表框List1中显示的结果是( )