例7.8.frm

一本学习Visual Basic编程的好书

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_Load()
    Show
    m = Val(InputBox("输入m的值"))
    n = Val(InputBox("输入n的值"))
    Print m; "和"; n; "的最大公约数是："; gys(n, m)
End Sub
Private Function gys(n, m)
    p = n Mod m
    If p = 0 Then             '终止条件
        gys = m
    Else
        gys = gys(m, p)     'm→n,p→m,再调用
    End If
End Function