Add 3 custom menu links to the navigation menu - drupal-7

Question

I am using Drupal 7 and I want to add 3 menu links to the navigation menu. The links are based on the current logged in users 'uid' but I can't get it to work. I have checked this site out and ever example uses a custom module to implement. I am trying to add this to my template.php page.
This is currently what I have.
function mytheme_menu() {
$items = array();
$items['user/%uid/following'] = array(
'title' => 'My Following Content',
'description' => 'View the item',
'type' => MENU_NORMAL_ITEM,
'menu_name' => 'navigation',
'access callback' => 'user_is_logged_in', // TRUE, 'user_is_logged_in' or user_is_anonymous to check if logged in
'expanded' => TRUE,
);
$items['user/%uid/created'] = array(
'title' => 'My Created Content',
'description' => 'Item members',
'type' => MENU_NORMAL_ITEM,
'menu_name' => 'navigation',
'page callback' => views_page('individual_item', 'item_members'),
'access callback' => 'user_is_logged_in', // TRUE, 'user_is_logged_in' or user_is_anonymous to check if logged in
'expanded' => TRUE,
);
$items['user/%uid/interacted'] = array(
'title' => 'My Interacted Content',
'description' => 'All the Content for this item',
'menu_name' => 'navigation',
'type' => MENU_NORMAL_ITEM,
'page callback' => views_page('individual_item', 'item_content'),
'access callback' => 'user_is_logged_in', // TRUE, 'user_is_logged_in' or user_is_anonymous to check if logged in
'expanded' => TRUE,
);
return $items;
}

Answer 1

You're right there Brad, you can only implement hook_menu() in a custom module.
You can follow something like this to create a simple custom module and put your custom_module_menu() function it the .module file.
https://www.drupal.org/node/778734