Reason's why DavidP (the best coder in the world, as we all know already) does not answer more questions on the C/C++ boards:
2. more laziness - if a code tag contains too much code, i get annoyed and just stop reading it all
I don't think there is a lack of experience here. Many people here have degrees, and quite a lot of us are in college.
I think it is simply laziness.