主题：简单的问题

Dim ary() As Integer = {5, 7, 9, 11, 13, 15, 17, 21, 23, 25, 27, 29, 31}
Dim s As Integer = 12

If array.IndexOf(ary,s) > -1 Then
    msgbox("正确")
Else
    msgbox("错误")
End If