void __fastcall TForm1::Button2Click(TObject *Sender)
{

   init_var();
   Label1->Caption=Button2->Caption;
   Label2->Caption=" = "+IntToStr(x&&y);

}

int TForm1::init_var()
 {
      try
      {
      x = Edit1->Text.ToInt();
      }
      catch (EConvertError &e)
      {
      MessageBox();
      }

   try
      {
      y = Edit2->Text.ToInt();
      }
      catch (EConvertError &e)
      {
      MessageBox();
      }

      return(x, y,);
 }

Label1->Caption=Button2->Caption;
Label2->Caption=" = "+IntToStr(x&&y);