VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "計算求和"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Function Sum(n As Integer)
'計算求和子函數(shù)
    Static f As Integer
    f = f + n
    Sum = f
End Function

Private Sub Form_Click()
'單擊窗體
    Dim i As Integer
    For i = 1 To 5
        Print "∑" & i & "=" & Sum(i)
    Next i
End Sub