有如下VB程序段:
Private Sub Command1_Click()
Dim s As String, ch As String
Dim n As Integer, t As Integer, c As Integer
s = "Go-2020-12"
n = Len(s):t = 0
For i = 1 To n
ch = Mid(s,i,1)
If ch >= "0" And ch <= "9" Then
t = t + Val(ch)
Else
c = t: t = 0
End If
Next i
Label1.Caption = Str(c)
End Sub
执行完以上程序段后,标签Label1上显示的内容为( )