Create Custom Post Type with Category in WordPress without plugin

'name' => 'Custom Post',
'singular_name' => 'custom',
),
'hierarchical' => true,
'public' => true,
'has_archive' => true,
'menu_icon' => 'dashicons-welcome-write-blog',
'supports' => array('title', 'editor', 'thumbnail'),
);
register_post_type('custom post', $args);
}
add_action('init', 'news_custom_post');
?>

Syntax:

'name' => 'Any Custom-Post-Name',
'singular_name' => 'singular-name of Custom-Post-Name',
),
'hierarchical' => true,
'public' => true,
'has_archive' => true,
'menu_icon' => 'dashboard wordpress icon shortcode',
'supports' => array('title', 'editor', 'thumbnail'),
);
register_post_ype('Any Custom-Post-Name', $args);
}
add_action('init', 'function-name');
?>

Output: