例2-9.frm

Visual Basic程序设计基础》-杨小影-源代码

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   2340
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4050
   BeginProperty Font 
      Name            =   "宋体"
      Size            =   10.5
      Charset         =   134
      Weight          =   400
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   LinkTopic       =   "Form1"
   ScaleHeight     =   2340
   ScaleWidth      =   4050
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "判断"
      Height          =   1335
      Left            =   3120
      TabIndex        =   4
      Top             =   600
      Width           =   495
   End
   Begin VB.TextBox Text2 
      Height          =   495
      Left            =   1680
      TabIndex        =   3
      Top             =   1440
      Width           =   615
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   1680
      TabIndex        =   2
      Top             =   600
      Width           =   615
   End
   Begin VB.Label Label2 
      Caption         =   "纵坐标Y："
      Height          =   495
      Left            =   240
      TabIndex        =   1
      Top             =   1440
      Width           =   1215
   End
   Begin VB.Label Label1 
      Caption         =   "横坐标X："
      Height          =   495
      Left            =   240
      TabIndex        =   0
      Top             =   600
      Width           =   1095
   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()
x = Val(Text1.Text)
y = Val(Text2.Text)
If x = 0 Or y = 0 Then    '判断坐标点是否位于坐标轴
     Print "该点不位于任何象限"
End If
If x > 0 Then               '判断坐标点所在象限
    If y > 0 Then
      Print "该点位于第一象限"
    Else
      Print "该点位于第四象限"
End If
Else
    If y > 0 Then
      Print "该点位于第二象限"
    Else
      Print "该点位于第三象限"
End If
End If
End Sub