You can use AStyle (Artistic Style) source code indenter to help you auto format your source code. It will for sure not correct all your coding styles but for sure will eliminate most of them. You can download AStyle from this location or install via apt-get:

sudo apt-get install astyle

To format your file you can execute below command:

astyle --suffix=none `find . -regex '.*\.[ch]p*p*$'`