帮我编一个VB程序 输入一个五位数 程序将它反向输出 例如输入12345 输出54321，范围要用长整数型

下面是VB代码，数字多长都可以反向，连字符都可以反向 Function xx(ByVal aa As String) As String Dim longth As Integer Dim i As Integer longth = Len(aa) For i = longth To 1 Step -1 xx = xx & Mid(aa, i, 1) Next End Function