编程补充题3.frm

一本学习Visual Basic编程的好书

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "处理字符串"
   ClientHeight    =   2865
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   2865
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "处理"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3000
      TabIndex        =   3
      Top             =   1440
      Width           =   975
   End
   Begin VB.ListBox List1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1260
      ItemData        =   "编程补充题3.frx":0000
      Left            =   120
      List            =   "编程补充题3.frx":0007
      TabIndex        =   2
      Top             =   1440
      Width           =   1575
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   120
      TabIndex        =   1
      Text            =   " "
      Top             =   600
      Width           =   4455
   End
   Begin VB.Label Label2 
      Caption         =   "数字串内容"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   240
      TabIndex        =   5
      Top             =   1200
      Width           =   1215
   End
   Begin VB.Label Label3 
      Caption         =   " "
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2280
      TabIndex        =   4
      Top             =   2280
      Width           =   2175
   End
   Begin VB.Label Label1 
      Caption         =   "字符串内容"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1680
      TabIndex        =   0
      Top             =   240
      Width           =   1335
   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()
   k = 0
   n = -1
   s = Text1.Text         '取字符串
   For i = 1 To Len(s)    '按顺序逐个字符判断
      t = Mid(s, i, 1)    '取i位置的一个字符
      If t < "0" Or t > "9" Then  '判是否数字
          k = 0           '非数字，置k=0
      Else
          If k = 0 Then
              n = n + 1   '指向列表框的下一行
              List1.List(n) = t   '存入列表框
              k = 1       '表示刚存过数字
          Else
              '把数字加入到列表框当前行的末尾
              List1.List(n) = List1.List(n) + t
          End If
      End If
   Next i
   Label3.Caption = Str(n + 1) + "个数字串"
End Sub