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
  matrx2 = array of array of real;
type
  TForm1 = class(TForm)
    Button1: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
//PROGRAM D6R6
//Driver for routine ELMHES
uses
  unit2;
  {$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
var
    A:matrx2;      R,C:Array[0..5] of real;
    I,J:Integer;   F:TextFile;
const
    s1='%10.2f';   s2='.###0e+00';  NP = 5;
begin
  setlength(A ,6,6);
  //输入已知的方程组的系数矩阵
  A[1, 1]:=1; A[1, 2]:=2; A[1, 3]:=300; A[1, 4]:=4; A[1, 5]:=5;
  A[2, 1]:=2; A[2, 2]:=3; A[2, 3]:=400; A[2, 4]:=5; A[2, 5]:=6;
  A[3, 1]:=3; A[3, 2]:=4; A[3, 3]:=5;   A[3, 4]:=6; A[3, 5]:=7;
  A[4, 1]:=4; A[4, 2]:=5; A[4, 3]:=600; A[4, 4]:=7; A[4, 5]:=8;
  A[5, 1]:=5; A[5, 2]:=6; A[5, 3]:=700; A[5, 4]:=8; A[5, 5]:=9;
  //输出计算结果到文件
  AssignFile(F, 'd:\delphi_shu\p6\d6r6.dat');
  Rewrite(F);
  //Print norms
  Writeln(F);
  Writeln(F, ' ******* Original Matrix ******* ');
  For I:= 1 To NP do
  Writeln(F, Format(s1,[A[I,1]]),Format(s1,[A[I,2]]),Format(s1,[A[I,3]]),
                               Format(s1,[A[I,4]]), Format(s1,[A[I,5]]));
  Writeln(F);
  Writeln(F, ' ******* Balance Matrix ******* ');
  Writeln(F);
  BALANC(A, NP);
  For I:= 1 To NP do
  Writeln(F, Format(s1,[A[I,1]]),Format(s1,[A[I,2]]),Format(s1,[A[I,3]]),
                               Format(s1,[A[I,4]]), Format(s1,[A[I,5]]));
  Writeln(F);
  Writeln(F, ' ******* Reduce to Hessenberg Form ******* ');
  Writeln(F);
  ELMHES(A,NP);
  For J:=1 To NP-2 DO
    For I:=J+2 To NP do
      A[I,J]:=0;
  For I:= 1 To NP do
  Writeln(F, FormatFloat(s2,A[I,1]),'   ',FormatFloat(s2,A[I,2]),'   ',
             FormatFloat(s2,A[I,3]),'   ',FormatFloat(s2,A[I,4]),'   ',
             FormatFloat(s2,A[I,5]));
  CloseFile(F);
  //屏幕显示计算结果
  memo1.Lines.LoadFromFile('d:\delphi_shu\p6\d6r6.dat');
end;

end.