How to create CPT in wordpress

Creating a Custom Post Type (CPT) in WordPress involves adding some code to your theme’s functions.php file or creating a separate plugin. Here is an example of how you can create a CPT called “Books”:

// Register Custom Post Type
function books_post_type() {

    $labels = array(
        'name'                  => _x( 'Books', 'Post Type General Name', 'text_domain' ),
        'singular_name'         => _x( 'Book', 'Post Type Singular Name', 'text_domain' ),
        'menu_name'             => __( 'Books', 'text_domain' ),
        'name_admin_bar'        => __( 'Book', 'text_domain' ),
        'archives'              => __( 'Book Archives', 'text_domain' ),
        'attributes'            => __( 'Book Attributes', 'text_domain' ),
        'parent_item_colon'     => __( 'Parent Book:', 'text_domain' ),
        'all_items'             => __( 'All Books', 'text_domain' ),
        'add_new_item'          => __( 'Add New Book', 'text_domain' ),
        'add_new'               => __( 'Add New', 'text_domain' ),
        'new_item'              => __( 'New Book', 'text_domain' ),
        'edit_item'             => __( 'Edit Book', 'text_domain' ),
        'update_item'           => __( 'Update Book', 'text_domain' ),
        'view_item'             => __( 'View Book', 'text_domain' ),
        'view_items'            => __( 'View Books', 'text_domain' ),
        'search_items'          => __( 'Search Book', 'text_domain' ),
        'not_found'             => __( 'Not found', 'text_domain' ),
        'not_found_in_trash'    => __( 'Not found in Trash', 'text_domain' ),
        'featured_image'        => __( 'Featured Image', 'text_domain' ),
        'set_featured_image'    => __( 'Set featured image', 'text_domain' ),
        'remove_featured_image' => __( 'Remove featured image', 'text_domain' ),
        'use_featured_image'    => __( 'Use as featured image', 'text_domain' ),
        'insert_into_item'      => __( 'Insert into book', 'text_domain' ),
        'uploaded_to_this_item' => __( 'Uploaded to this book', 'text_domain' ),
        'items_list'            => __( 'Books list', 'text_domain' ),
        'items_list_navigation' => __( 'Books list navigation', 'text_domain' ),
        'filter_items_list'     => __( 'Filter books list', 'text_domain' ),
    );
    $args = array(
        'label'                 => __( 'Book', 'text_domain' ),
        'description'           => __( 'Post Type Description', 'text_domain' ),
        'labels'                => $labels,
        'supports'              => array( 'title', 'editor',