题目内容：

vb求n阶乘表达式
Private Sub Command1_Click()
Dim n As Integer
n = InputBox("请输入一个正整数： ")
Print Fac(n)
End Sub
Private Function Fac(m) As Long
'' '请不要删除该行,只在下一行中填空'
For k = 2 to
Fac = Fac * k
Next k
End Function

优质解答

Private Sub Command1_Click()
Dim n As Integer
n = InputBox("请输入一个正整数：")
Print Fac(n)
End Sub
Private Function Fac(m) As Long
'' '请不要删除该行,只在下一行中填空'
For k = 2 To m
Fac = Fac * k
Next k
End Function