例4.6.frm

vb编程+从基础到实践光盘代码

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "例4-6"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2640
      TabIndex        =   1
      Top             =   960
      Width           =   1215
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   720
      TabIndex        =   0
      Top             =   960
      Width           =   1215
   End
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 a(10) As Integer                       '声明一个整数数组
    a(1) = 10: a(2) = 15: a(3) = 5: a(4) = 13: a(5) = 20:
    a(6) = 31: a(7) = 25: a(8) = 23: a(9) = 1: a(10) = 17
                                               '给数组赋值
    Text1.Text = sum(True, a)                  '数组作参数计算连加
    Text2.Text = sum(False, a())               '数组作参数计算连乘
End Sub
Private Function sum(operate As Boolean, a() As Integer) As Long
    Dim i As Integer
    If operate Then
                                               '第一个参数为True时，计算连加
        For i = LBound(a) To UBound(a)
            sum = sum + a(i)
        Next
    Else
        sum = 1
        For i = LBound(a) To UBound(a)        '第一个参数为False时，计算连乘
            sum = sum * a(i)
        Next
    End If
End Function