单击一次命令按钮之后,在对话框中输入12,2,34,23,窗体中的输出结果为______。 Private Sub Command1_ Click () Dim a(4) As Integer For i = 1 To 4

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问题 单击一次命令按钮之后,在对话框中输入12,2,34,23,窗体中的输出结果为______。    Private Sub Command1_ Click ()       Dim a(4) As Integer       For i = 1 To 4          a (i) = Val (InputBox (“请输入元素”))       Next i       plus a(1), a(2), a(3)    End Sub    Sub plus(first As Integer, second As Integer, third As Integer, Optional forth)        n = first + second + third        If Not IsMissing (forth) Then           n = n + forth        End If         Print n    End Sub

选项 A、14
B、71
C、48
D、37

答案C

解析
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