Function Max(n1 As Long, n2 As Long) As Long
Max = IIf(n1 > n2, n1, n2)
End Function
Private Sub Form_Click() '点击窗体运行
Dim x1 As Long, x2 As Long, x3 As Long
x1 = Val(InputBox("请输入第1个数"))
x2 = Val(InputBox("请输入第2个数"))
x3 = Val(InputBox("请输入第3个数"))
MsgBox "这三个数的最大数是" & Max(Max(x1, x2), x3)
End Sub
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