unit Unit3;

interface

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

type
  userrec = RECORD
  username: STRING[8];
  password: STRING[6];
  level   : INTEGER;
  end;
  userlist = ARRAY[1..5] of userrec;

  TForm3 = class(TForm)
    BTexit: TButton;
    Label1: TLabel;
    Label2: TLabel;
    EDpass: TEdit;
    Label3: TLabel;
    EDlevel: TEdit;
    EDuser: TEdit;
    BTshow: TButton;
    BTsave: TButton;
    procedure FormCreate(Sender: TObject);
    procedure BTexitClick(Sender: TObject);
    procedure EDuserChange(Sender: TObject);
    procedure BTshowClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  temp, logonrec : userrec;
  logonlist: userlist;
  logonfile: FILE of userrec;
  count: INTEGER;
  numberofrecs: INTEGER;
  Form3: TForm3;
  position: integer;

implementation

uses Unit1;

{$R *.dfm}

procedure TForm3.FormCreate(Sender: TObject);
begin
  WHILE NOT EOF (logonfile) DO
  BEGIN
    ASSIGNFILE (logonfile, 'passwords.pwd');
    inc(count);
    READ(logonfile, logonlist [count]);
  END;
      CLOSEFILE(logonfile);
      numberofrecs:=count;
end;

procedure TForm3.BTexitClick(Sender: TObject);
begin
Form3.close;
end;

procedure TForm3.BTshowClick(Sender: TObject);
begin
EDuser.text:=logonfile[position].username;
end;

end.