form1.frm

Visual Basic程序设计视频教程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   1815
   ClientLeft      =   60
   ClientTop       =   360
   ClientWidth     =   4395
   LinkTopic       =   "Form1"
   ScaleHeight     =   1815
   ScaleWidth      =   4395
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   240
      TabIndex        =   1
      Top             =   720
      Width           =   1455
   End
   Begin VB.CommandButton Command1 
      Caption         =   "计算面积和周长"
      Height          =   495
      Left            =   2040
      TabIndex        =   0
      Top             =   720
      Width           =   1575
   End
   Begin VB.Label Label1 
      Caption         =   "请输入圆的半径："
      Height          =   255
      Left            =   360
      TabIndex        =   2
      Top             =   240
      Width           =   1575
   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()
    Dim R As Double
    Dim mj As Double
    Dim zc As Double
    Const PI = 3.1415926
    R = Val(Text1.Text)
    mj = PI * R * R
    zc = 2 * PI * R
    Form1.Cls
    Print "圆的面积是" & mj
    Print "圆的周长是" & zc
End Sub