3.18.frm

来自「VB6.0应用例题」· FRM 代码 · 共 34 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   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 Sub Form_Click()
  Dim I As Integer, N As Integer      'I是循环变量，N为级数项数
  Dim F As Long           '阶乘值用长整型保存
  Dim e As Double, X As Double       'X为级数 的一项
  Sum = 0: N = 0: X = 1   '首项为第0项时Sum和X的值
  Do While X >= 0.0001
    e = e + (-1) ^ N * X
    N = N + 1
    F = 1               '每个阶乘值首先置1以便累乘
    For I = 1 To N      '本循环计算阶乘
      F = F * I
    Next I
    X = 1 / F
  Loop
  Print "Sum="; e
End Sub