TUGAS - DERET

TUGAS DERET

unit derettugasjadi;

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;

type

  TDeret = class(TForm)

    Label1: TLabel;

    Label2: TLabel;

    Edit1: TEdit;

    Memo1: TMemo;

    Button1: TButton;

    procedure Button1Click(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;

var

  Deret: TDeret;

implementation

{$R *.dfm}

procedure TDeret.Button1Click(Sender: TObject);

var

  a,b,c,i:integer;

begin

  a:=strtoint(Edit1.Text);

  Memo1.Clear;

  i:=-1;

  c:=-2;

  while i<=a do

  begin

    b:=i;

    Memo1.Lines.Add(inttostr(b));

    i:=(b+c)*-1;

    c:=c*-1;

end;

end;

end.