Use default controller

mvc/app/controllers/Welcome.php

@@ -0,0 +1,7 @@
+<?php
+    class Welcome{
+        public function __construct(){
+            echo('Welcome to app');
+        }        
+    }
+    

mvc/app/libs/Core.php

@@ -15,8 +15,15 @@
         protected $defaultParams = [];
 
         public function __construct(){
-            // $url = $this->getURL();
-            print_r($this->getURL());
+            // print_r($this->getURL());
+            $url = $this->getURL();
+
+            if (file_exists('../app/controllers/' . ucwords($url[0]) . '.php')) {
+                $this->defaultController = ucwords($url[0]);
+                unset($url[0]);
+            }
+            require_once('../app/controllers/' . $this->defaultController . '.php');
+            $this->defaultController = new $this->defaultController;
         }
 
         public function getURL(){