<p>I'm looking for a good article on using emacs as C/C++ IDE.</p>

<p>Something like Steve Yegge's <a href="http://steve.yegge.googlepages.com/effective-emacs" rel="noreferrer">"Effective emacs"</a>.</p>

No specific article, really, but I've found
EmacsWiki
to be full of useful information. Consider checking out these entries:
CPlusPlus
as a starting point for many C++-related articles, and
CppTemplate
to define a template that can give you a good skeleton when you start new files