顺序查找.frm

来自「蒋加伏主编VB程序设计第四版PPT及全部课本源码 北京邮电大学出版社 」· FRM 代码 · 共 84 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "例[8-15] 在数组中顺序查找元素"
   ClientHeight    =   1455
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3705
   LinkTopic       =   "Form1"
   ScaleHeight     =   1455
   ScaleWidth      =   3705
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   1185
      TabIndex        =   1
      Top             =   225
      Width           =   2295
   End
   Begin VB.Label Label4 
      BorderStyle     =   1  'Fixed Single
      Height          =   375
      Left            =   2145
      TabIndex        =   4
      Top             =   840
      Width           =   1335
   End
   Begin VB.Label Label3 
      BorderStyle     =   1  'Fixed Single
      Height          =   375
      Left            =   1200
      TabIndex        =   3
      Top             =   840
      Width           =   855
   End
   Begin VB.Label Label2 
      Caption         =   "关键字："
      Height          =   375
      Left            =   240
      TabIndex        =   2
      Top             =   840
      Width           =   855
   End
   Begin VB.Label Label1 
      Caption         =   "一维数组："
      Height          =   375
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   975
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Form_Click()
  Dim b()
  Cls
  Text1.Text = ""
  b = Array(2, 4, 6, 8, 12, 15, 3)
  For i = 0 To UBound(b)
    Text1.Text = Text1.Text & b(i) & "  "
  Next i
  k = Val(InputBox("输入要查找的关键值"))
  Label3.Caption = Str(k)
  Call Search(b(), k, n%)      '调用子过程
  If n <> -1 Then
     Label4.Caption = "元素的下标为" & n
  Else
    Label4.Caption = "查找失败"
  End If
End Sub
Public Sub Search(a(), ByVal key, index%)   '子过程
  Dim i%
  For i = LBound(a) To UBound(a)
    If key = a(i) Then   '找到，元素的下标保存在index形参中，结束查找
      index = i
      Exit Sub
    End If
  Next i
  index = -1    '找不到，index形参的值为-1
End Sub