Tab-completion in Emacs' c-mode

For a long time, I've wanted tab-completion in Emacs when programming in C, and haven't had the time to delve into ELisp enough to work out how to do it. However, thanks to the Emacs Wiki I now have it working!

I added the following to my .emacs file:

; Better tab completion
(defun indent-or-complete ()
  "Complete if point is at end of a word, otherwise indent line."
  (interactive)
  (if (looking-at "\\>")
      (dabbrev-expand nil)
    (indent-for-tab-command)))
(add-hook 'c-mode-common-hook
          (function (lambda ()
                      (local-set-key (kbd "<tab>") 'indent-or-complete))))

And now it works very nicely indeed!