vb 十进制转二进制 大数模幂运算的快速算法

vb 十进制转二进制 大数模幂运算的快速算法

图省事，没做界面，你自己改一下吧，代码和效率可都是大大提高了哦！
Option Explicit
Private Function modular(a As Integer, b As Integer, n As Integer) As Long
Dim f As Long
If b = 0 Then
f = 1
Else
If b = 1 Then
f = a Mod n
Else
f = modular(a, b \ 2, n) * modular(a, b \ 2, n) Mod n
If b Mod 2 = 1 Then f = f * a Mod n
End If
End If
modular = f
End Function

Private Sub Command1_Click()
Dim a As Integer, b As Integer, n As Integer
'a = txta.Text
' b = txtb.Text
'n = txtn.Text
a = "2"
b = "30"
n = "10000"
'txtresult.Text = CStr(modular(a, b, n))
Print CStr(modular(a, b, n))
End Sub

'把这几句
a = txta.Text
b = txtb.Text
n = txtn.Text
'改为：
a =val(txta.Text)
b = val(txtb.Text)
n = val(txtn.Text)
试试
追问：还是不对啊