递归调用.frm

来自「各种排序查找法与一些优秀的算法,包括二分查找,利用递推公式计算(裴波拉契数列),」· FRM 代码 · 共 40 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3075
   ClientLeft      =   60
   ClientTop       =   465
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3075
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "计算"
      Height          =   375
      Left            =   3240
      TabIndex        =   0
      Top             =   2160
      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()
  Dim n As Integer, f As Long
  n = InputBox("输入一个正整数")
  f = Fact(n)
  Print n; "!="; f
End Sub
Private Function Fact(ByVal n As Integer) As Long
  If n = 0 Or n = 1 Then
    Fact = 1
  Else
    Fact = n * Fact(n - 1)
  End If
End Function