unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button2: TButton;
    ListBox1: TListBox;
    procedure Button2Click(Sender: TObject);
    procedure ListBox1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  a: integer;
  putmas: array[1..5] of string;
implementation

{$R *.dfm}

procedure TForm1.Button2Click(Sender: TObject);
begin
ListBox1.Items.Add('ererwe');
ListBox1.Items.Add('укукуцк');
a:=0;
end;

procedure TForm1.ListBox1Click(Sender: TObject);
begin
putmas[a]:= Listbox1.Items[ListBox1.ItemIndex];
showmessage(putmas[a]);
end;

end.