021.frm

VB初级练习源码适合刚学习VB的人练习。。。。

VERSION 5.00
Begin VB.Form Form1 
   BackColor       =   &H00FFFF00&
   Caption         =   "Form1"
   ClientHeight    =   6000
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   5430
   LinkTopic       =   "Form1"
   ScaleHeight     =   6000
   ScaleWidth      =   5430
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text4 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   1335
      Left            =   1680
      TabIndex        =   7
      Top             =   4320
      Width           =   3615
   End
   Begin VB.TextBox Text3 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   1680
      TabIndex        =   6
      Top             =   2880
      Width           =   3615
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   1680
      TabIndex        =   5
      Top             =   1440
      Width           =   3615
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   1680
      TabIndex        =   4
      Top             =   0
      Width           =   3615
   End
   Begin VB.CommandButton Command1 
      BackColor       =   &H0000FF00&
      Caption         =   "S="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   0
      MaskColor       =   &H000000C0&
      TabIndex        =   3
      Top             =   4320
      Width           =   1575
   End
   Begin VB.Label Label3 
      BackColor       =   &H00FFFFFF&
      Caption         =   "C="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   0
      TabIndex        =   2
      Top             =   2880
      Width           =   1575
   End
   Begin VB.Label Label2 
      BackColor       =   &H00FFFFFF&
      Caption         =   "B="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   0
      TabIndex        =   1
      Top             =   1440
      Width           =   1575
   End
   Begin VB.Label Label1 
      BackColor       =   &H00FFFFFF&
      Caption         =   "A="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1335
      Left            =   0
      TabIndex        =   0
      Top             =   0
      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 a As Integer, b As Integer, c As Integer, p As Single, s As Single
a = Text1.Text
b = Text2.Text
c = Text3.Text
p = (a + b + c) / 2
s = (p * (p - a) * (p - b) * (p - c)) ^ (1 / 2)
Text4.Text = s



End Sub