【試題詳情】在窗體上畫一個文本框,然后編寫如下代碼: Option Base 1 Private Sub Form_Click( ) Dim arr Dim Start As Integer, Finish As Integer Dim Sum As Integer art=Array(12,4,8,16) Start=LBound(arr) Finish=UBound(arr) Sum=0 For i=Start To Finish Sum=Sum+arr(i) Next i c=Sum/Finish Text1.Text=c End Sub 程序運行后,單擊窗體.則在文本框中顯示的內容是______。