** A note about C mode indentation customization.
The old (Emacs 19.29) ways of specifying a C indentation style do not normally work in the new implementation of C mode. It has its own methods of customizing indentation, which are much more powerful than the old C mode. See the Editing Programs chapter of the manual for details.

However, you can load the library cc-compat to make the old customization variables take effect.