unit1.pas

用于开发税务票据管理的软件

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
//PROGRAM D7R6
//Driver for routine FPOLY
uses
  unit2;
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
const
  s1='%10.4f';
  NVAL = 15; NPOLY = 5;  DX = 0.1;
var
  AFUNC:array[0..5] of real;
  I,J:integer;   X:real;
  F:TextFile;
begin
  //输出计算结果到文件
  AssignFile(F, 'd:\delphi_shu\p7\d7r6.dat');
  Rewrite(F);
  Writeln(F, '            Powers of X ');
  Writeln(F);
  Writeln(F, '  X    X^0    X^1    X^2    X^3    X^4');
  For I:=1 To NVAL do
  begin
    X:=I * DX;
    FPOLY(X,AFUNC,NPOLY);
    Writeln(F,Format(s1,[X]),Format(s1,[AFUNC[1]]),Format(s1,[AFUNC[2]]),
         Format(s1,[AFUNC[3]]),Format(s1,[AFUNC[4]]),Format(s1,[AFUNC[5]]));
  end;
  Writeln(F);
  CloseFile(F);
  //屏幕显示计算结果
  memo1.Lines.LoadFromFile('d:\delphi_shu\p7\d7r6.dat');
end;
end.