wordpress get template url

1// Get template directory example:
2<img src="<?php echo get_template_directory_uri(); ?>/images/logo.png" />
3
4// If you use child theme you will have to use another function:
5<img src="<?php echo get_stylesheet_directory_uri(); ?>/images/logo.png" />
6  

1include( get_template_directory_uri() . '/includes/my_file.php' );