题目内容

假定有以下函数过程:Function Fun(S As String)As StringDim s1 As StringFor i = 1 To Len(S)s1 = UCase(Mid(S,i,1))+s1Next iFun = s1End Function在窗体上画一个命令按钮，然后编写如下事件过程:Private Sub Command1_Click()Dim Str1 As String, Str2 As StringStr1 = InputBox("请输入一个字符串")Str2 = Fun(Str1)Print Str2End Sub程序运行后，单击命令按钮，如果在输入对话框中输入字符串"abcd1234"，则单击"确定"按钮后在窗体上的输出结果为___________。

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