求100以内的素数的和

Private Sub Command1_Click()

 

  Dim s As Integer, n As Integer

  s = 0: n = 1

 

 

  Do While n <= 100

 

   If IsPrimer(n) <> 0 Then

      s = s + n

   End If

   n = n + 1

 

  Loop

 

  Print "1~100之内的素数的和是：" + Str(s)

  

'Label1.Caption = IIf(IsPrimer(Int(Val(Text2.Text))) = 0, "bushi", "shi”)

End Sub

 

 

Private Function IsPrimer(n As Integer) As Integer

 

   Dim i As Integer

   

   For i = 2 To n - 1

      If n Mod i = 0 Then

       Exit For

      End If

   Next i

   

   If i = n Then

       IsPrimer = n

   Else

       IsPrimer = 0

   End If

   

End Function