运行时错误6 - 如何使Mod处理双精度？

Question

我在vba中总是遇到运行时错误:

 Sub rsa()

Dim c1 As Long
Dim c2 As Long
Dim z As Long
Dim e As Long

pt = "xa"
n = 187
e = 7

For i = 1 To Len(pt)

    b = Mid$(pt, i, 1)

        If b <> " " Then

             z = Asc(UCase(b))
             'Here is the problem:
             c = z ^ e Mod n
             Text = Text & c

        Else

        Text = Text & " "

        End If

Next i
Cells(20, 4).Value = Text
End Sub

我得到运行时错误c = z ^ e Mod n.

我尝试了不同的数据类型,但没有解决方案.

Answer 1

A Mod B是等于A - Int(A / B) * B,所以你可以尝试使用c = z ^ e - Int(z ^ e / n) * n代替c = z ^ e Mod n.这个对我有用