debug.frm

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VERSION 5.00
Begin VB.Form form1 
   Caption         =   "Debug"
   ClientHeight    =   1185
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3045
   LinkTopic       =   "Form1"
   ScaleHeight     =   1185
   ScaleWidth      =   3045
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text2 
      Alignment       =   1  'Right Justify
      Height          =   270
      Left            =   1800
      TabIndex        =   3
      Top             =   360
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "求阶乘"
      Height          =   375
      Left            =   1080
      TabIndex        =   2
      Top             =   720
      Width           =   855
   End
   Begin VB.TextBox Text1 
      Alignment       =   1  'Right Justify
      Height          =   270
      Left            =   120
      TabIndex        =   0
      Top             =   360
      Width           =   1095
   End
   Begin VB.Label Label2 
      Caption         =   "阶乘值"
      Height          =   255
      Left            =   2040
      TabIndex        =   4
      Top             =   120
      Width           =   615
   End
   Begin VB.Label Label1 
      Caption         =   "输入值"
      Height          =   255
      Left            =   480
      TabIndex        =   1
      Top             =   120
      Width           =   615
   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()
    Text2.Text = JieCheng(Text1.Text)
End Sub
Function JieCheng(ByVal x As Integer) As Long
    If x = 1 Then
        JieCheng = 1
    Else
        JieCheng = x * JieCheng(x - 1)
    End If
End Function