C++ doesn't have and doesn't need an official style. Many organisations impose style guides on their contributors to try to maintain some kind of corporate look and feel; some of these contain snippets of good advice, but many just force you to add strange decorations that seemed like a good idea to someone writing a completely different language in the 1980s.
The only really useful advice you'll find amongst the waffle is:
- Define a consistent way to distinguish types, objects, and some kinds of function (such as accessors and factories), so you'll know to write (for example)
Thing thing = GetThing(); without looking the names up.
- Don't start names with underscores. This is forbidden in some circumstances, and it's simpler and more readable to not do it at all than to worry about exactly when you can.
- Spare a thought for the poor chap (perhaps you) who has to read and maintain the code in a few years' time.
- Keep it simple.
- Use your brain.
