半方差计算.frm

计算半方差

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "`"
   ClientHeight    =   7905
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   9900
   LinkTopic       =   "Form1"
   ScaleHeight     =   7905
   ScaleWidth      =   9900
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text4 
      Height          =   735
      Left            =   5640
      TabIndex        =   4
      Text            =   "10.0"
      Top             =   3960
      Width           =   2055
   End
   Begin VB.TextBox Text3 
      Height          =   735
      Left            =   5640
      TabIndex        =   3
      Text            =   "7.5"
      Top             =   2880
      Width           =   2055
   End
   Begin VB.TextBox Text2 
      Height          =   735
      Left            =   5640
      TabIndex        =   2
      Text            =   "2.5"
      Top             =   1800
      Width           =   2055
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   1095
      Left            =   3960
      TabIndex        =   1
      Top             =   4920
      Width           =   1815
   End
   Begin VB.TextBox Text1 
      Height          =   735
      Left            =   5640
      TabIndex        =   0
      Top             =   720
      Width           =   2055
   End
   Begin VB.Label Label4 
      Caption         =   "输入a"
      Height          =   495
      Left            =   4920
      TabIndex        =   8
      Top             =   4200
      Width           =   855
   End
   Begin VB.Label Label3 
      Caption         =   "输入c1"
      Height          =   495
      Left            =   4920
      TabIndex        =   7
      Top             =   3120
      Width           =   735
   End
   Begin VB.Label Label2 
      Caption         =   "输入c0"
      Height          =   375
      Left            =   4920
      TabIndex        =   6
      Top             =   1920
      Width           =   735
   End
   Begin VB.Label Label1 
      Caption         =   "输入h"
      Height          =   615
      Left            =   4920
      TabIndex        =   5
      Top             =   960
      Width           =   855
   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 Single
Dim h As Single
Dim c0 As Single
Dim c1 As Single
Dim a As Single
h = Val(Text1.Text)
c0 = Val(Text2.Text)
c1 = Val(Text3.Text)
a = Val(Text4.Text)
r = c0 + c1 * ((3 * h) / (2 * a) - (h / a) ^ 2 / 2)
Print Format(r, "##.000")
End Sub