Of course! I wrote my own blogging engine in C (http://boston.conman.org/about/technical.html) but when I did it (very late 90s) there wasn't much competition (it was originally intended for an online journal, which is what weblogs were called back then).

It works. No reason to scrap working code. It has features that most blogging engines still don't have (mine can accept posts via email, in addition to the web interface) and some that I've yet to see in any blogging engine (you can display all posts between two arbitrary dates, in chronological or reverse chronological order, via the URL). The only feature it really lacks is a commenting feature, and there, I'm not sure if that's really a bad thing or not.