例10-7计算三角函数的文件.frm

来自「蒋加伏主编VB程序设计第四版PPT及全部课本源码 北京邮电大学出版社 」· FRM 代码 · 共 45 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "例[10-7]建立三角函数文件"
   ClientHeight    =   2145
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4350
   LinkTopic       =   "Form1"
   ScaleHeight     =   2145
   ScaleWidth      =   4350
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "计算"
      Height          =   495
      Left            =   1560
      TabIndex        =   0
      Top             =   840
      Width           =   1215
   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 SinVal As Single, TanVal As Single, CosVal As Single
    '在1号通道以顺序写方式打开文件D:\ TrigFun.txt
  Open "D:\TrigFun.txt" For Output As #1
  Print #1, " * ", "SIN", "COS", "TAN"
  Print #1, " "
   '循环计算0~90度的三角函数值
  For i = 0 To 90
    arc = i * 3.14159265 / 180            '将角度转换为弧度
    SinVal = Format(Sin(arc), "0.000000") '分别计算角度的Sin,Cos,Tan函数值
    CosVal = Format(Cos(arc), "0.000000")
    TanVal = Format(Tan(arc), "0.000000")
'将角度，角度的Sin,Cos,Tan函数值写入文件D:\TrigFun.txt
    Print #1, i, SinVal, CosVal, TanVal
  Next i
  Close #1                  '关闭文件D:\ TrigFun.txt，释放1号通道
End Sub