最大公约数.frm

Visual Basic课程举例1 有很好的例题

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
   Begin VB.TextBox Text2 
      Height          =   390
      Left            =   3000
      TabIndex        =   5
      Top             =   1800
      Width           =   735
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   960
      TabIndex        =   4
      Top             =   1800
      Width           =   735
   End
   Begin VB.CommandButton CmdCalcu 
      Caption         =   "运行"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1440
      TabIndex        =   0
      Top             =   2400
      Width           =   1695
   End
   Begin VB.Label Label3 
      Caption         =   "N="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2640
      TabIndex        =   3
      Top             =   1800
      Width           =   615
   End
   Begin VB.Label Label2 
      Caption         =   "M="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   600
      TabIndex        =   2
      Top             =   1800
      Width           =   615
   End
   Begin VB.Label Label1 
      Caption         =   "求自然数m,n的最大公约数和最小公倍数"
      Height          =   375
      Left            =   600
      TabIndex        =   1
      Top             =   1080
      Width           =   3495
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub CmdCalcu_Click()
    Dim m As Integer
    Dim n As Integer
    m = Text1
    n = Text2
    If n <= 0 Or m <= 0 Then
      Print "数据出错"
      'End
    End If
    mn = m * n
    If m < n Then t = m: m = n: n = t
    Do While (n <> 0)
          r = m Mod n
          m = n
          n = r
    Loop
    Print
    Print
    Print "最大公约数=", m,
    Print "最小公倍数=", mn / m
End Sub