5-15.frm

本教材为“第2章”、“第4章”、“第7章”、“第8章”、“第10章”和“第12章”配备了附加练习题及答案

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3825
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7185
   BeginProperty Font 
      Name            =   "幼圆"
      Size            =   15
      Charset         =   134
      Weight          =   700
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   LinkTopic       =   "Form1"
   ScaleHeight     =   3825
   ScaleWidth      =   7185
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "÷"
      Height          =   495
      Index           =   15
      Left            =   4200
      TabIndex        =   16
      Top             =   3000
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "×"
      Height          =   495
      Index           =   14
      Left            =   4200
      TabIndex        =   15
      Top             =   2400
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "－"
      Height          =   495
      Index           =   13
      Left            =   4200
      TabIndex        =   14
      Top             =   1800
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "＋"
      Height          =   495
      Index           =   12
      Left            =   4200
      TabIndex        =   13
      Top             =   1200
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "="
      Height          =   495
      Index           =   11
      Left            =   3240
      TabIndex        =   12
      Top             =   3000
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "."
      Height          =   495
      Index           =   10
      Left            =   2280
      TabIndex        =   11
      Top             =   3000
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "9"
      Height          =   495
      Index           =   9
      Left            =   3240
      TabIndex        =   10
      Top             =   2400
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "8"
      Height          =   495
      Index           =   8
      Left            =   2280
      TabIndex        =   9
      Top             =   2400
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "7"
      Height          =   495
      Index           =   7
      Left            =   1320
      TabIndex        =   8
      Top             =   2400
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "6"
      Height          =   495
      Index           =   6
      Left            =   3240
      TabIndex        =   7
      Top             =   1800
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "5"
      Height          =   495
      Index           =   5
      Left            =   2280
      TabIndex        =   6
      Top             =   1800
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "4"
      Height          =   495
      Index           =   4
      Left            =   1320
      TabIndex        =   5
      Top             =   1800
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "3"
      Height          =   495
      Index           =   3
      Left            =   3240
      TabIndex        =   4
      Top             =   1200
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "2"
      Height          =   495
      Index           =   2
      Left            =   2280
      TabIndex        =   3
      Top             =   1200
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "1"
      Height          =   495
      Index           =   1
      Left            =   1320
      TabIndex        =   2
      Top             =   1200
      Width           =   615
   End
   Begin VB.CommandButton Command1 
      Caption         =   "0"
      Height          =   495
      Index           =   0
      Left            =   1320
      TabIndex        =   1
      Top             =   3000
      Width           =   615
   End
   Begin VB.TextBox Text1 
      Alignment       =   1  'Right Justify
      Height          =   420
      Left            =   600
      TabIndex        =   0
      Text            =   "0"
      Top             =   600
      Width           =   5055
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim a, b, flag As Integer
Private Sub Command1_Click(Index As Integer)
Select Case Index
Case 0 To 10
If flag = 0 Then Text1.Text = "": flag = 1
Text1.Text = Text1.Text & Command1(Index).Caption
Case 12 To 15
a = Text1.Text
Text1.Tag = Command1(Index).Caption
Text1.Text = ""
Case 11
If flag = 1 Then b = Text1.Text
    Select Case Text1.Tag
      Case "＋"
      Text1.Text = a & "＋" & b & "=" & (Val(a) + Val(b))
      Case "－"
      Text1.Text = a & "－" & b & "=" & (Val(a) - Val(b))
      Case "×"
      Text1.Text = a & "×" & b & "=" & (Val(a) * Val(b))
      Case "÷"
      Text1.Text = a & "÷" & b & "=" & (Val(a) / Val(b))
    End Select
flag = 0
End Select
End Sub

Private Sub Form_Activate()
flag = 0
Text1.Text = ""
End Sub