Controller not working as expected

[eluser]StefanAlexandru[/eluser]
Thanks for your fast reply, so this is how i've made it, maybe others will encounter this problem too:

routes.php

Code:

$route['ad/:num']= '/ad/adbyid';

controller:

Code:

<?php
class Ad extends CI_Controller {


        public function index(){
              
        }

       public function adbyid(){
          $this->load->model('General');
           $data['anunt']=$this->General->adbyID();
           $this->load->view('anunt', $data);
}
                
      
}
?>