Dim t As Long
_________________________________________

Public Function j(n As Integer) As Long

t = 1
For i = 1 To n
t = t * i
Next i

j = t

End Function
_______________________________________
Private Sub Command1_Click()
Text1.Text = j(8) '這里就可以調(diào)用函數(shù)了
End Sub

Private Function f(Dim n As Integer) as Integer
if n=0 then
f=1
else
for i=1 to n
t=t*i
next
f=t
endif
End Function

調(diào)用的時(shí)候如下，x等于24
x=f(4)