CodeIgniter - Form: File Structure

CodeIgniter Form Step By Step Tutorial - Part 2: For this practice, we need 4 main files: books.php (controller), books_display.php (model), and books_main.php, books_input.php (view). Then, there are 3 adding files: books_header.php, books_footer.php, books_menu.php, and mystyles.css (as css). Create that files and put within folders like this:

+ CodeIgniter
  - mystyles.css
  + system
    + application
      + controllers
        - books.php
      + models
        - books_model.php
      + views
        - books_footer.php
        - books_header.php
        - books_input.php
        - books_main.php
        - books_menu.php