Design Patterns of 1972

In a similar vein, Axel-Tobias Schreiner wrote a book showing how you can build an OO structure within plain C: <a href="http://www.cs.rit.edu/~ats/books/ooc.pdf" rel="nofollow">http://www.cs.rit.edu/~ats/books/ooc.pdf</a>

Thank god we have OO