用VB怎么定义一个函数

来源：百度知道 编辑：UC知道 时间：2024/07/07 14:42:57
比如：用VB编好了n的阶乘，但是我想多次使用；定义为f(n);f(3)就等于3的阶乘、f(6)就等于6的阶乘；这样用起来方便些，要怎样编？

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) '这里就可以调用函数了
End Sub

实例：
Private Sub xs() ‘自定义了一个过程 xs ()
dim a
dim b
a= "早上好"
b="先生"
Print a
print b
End Sub

Private Sub Form_Click()
call xs() ' 调用自己定义的过程
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

调用的时候如下，x等于24
x=f(4)

Public Function fjiecheng(ByVal n As Integer)
Dim i, fn As Long
fn = 1
For i = 1 To n
fn = i * fn