c++ & g++ versions same or different

Question

I'm new to c++ & I've this big confusion around c++ & g++ versions. I've come to understand that there are different version of g++ compiler, latest being 4.8 (i think). But then I see c++98 & c++11 mentioned at so many places. Are these two versioning systems for the same thing or is it for totally different things? And if they are different, how can I check if I'm using c++98 or c++11? Thanks!

Answer 1

C++98 and C++11 are standards rather than compilers. They are issued by ISO and compilers are expected to implement the features as given in the standards.

The g++ compiler is one that provides (as of 4.8 anyway) most of the features from the c++11 standard, as you can see here.