form1.frm

Visual Basic程序设计视频教程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3180
   ClientLeft      =   60
   ClientTop       =   360
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3180
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   495
      Left            =   1800
      TabIndex        =   0
      Top             =   1320
      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 Command1_Click()
    '声明变量
    Dim t1 As Integer
    Dim t2 As Integer
    Dim day As Integer
    '赋初值
    day = 9
    t2 = 1
    
    '从第9天开始推导前一天剩下的桃子数直到求出第一天的桃子数
    Do While day > 0
        t1 = (t2 + 1) * 2   '某一天的桃子数是
                            '后一天的桃子数加1的2倍
        t2 = t1
        day = day - 1
    Loop
    MsgBox "桃子总数=" + Str(t1)
End Sub