Controler code :

controllers\Admin.php
---------------------
<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Admin extends CI_Controller
{
	function __construct()
	{
		parent:: __construct();
		$this->load->library('template');
	}
	public function index()
	{
	$this->template->admin('admin/dashboard');

	}
}