运行下面的程序,单击窗体后,从键盘上输入字符串"6",窗体上显示的输出结果为________。 Private Sub Form_Click() Dim n As Integer Dim s1 As String s1 = InputBox(" 输入一个字符串 ") n = Val(s1) Print Fact(n) End Sub Private Function Fact(m As Integer) As Long Dim s As Long If m = 1 Then s = 1 Else s = Fact(m - 1) * m End If Fact = s End Function