урок на делфи 29 - генератор цифр от 0 до 1000

задание на delphi. генератор от 0 до 1000 и от 1000 до 0

unit Unit1;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
ListBox1: TListBox;
ListBox2: TListBox;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
i:integer;
begin
for I := 0 to 1000 do
ListBox1.Items.Add(IntToStr(i));
ListBox1.Items.SaveToFile('1do100.txt');
end;
procedure TForm1.Button2Click(Sender: TObject);
var
i:integer;
begin
for i:=1000 downto 0 do
begin
ListBox2.Items.Add(IntToStr(i));
end;
ListBox2.Items.SaveToFile('1000do1.txt');
end;
end.



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