Does anyone know any site or book that presents problems like python challenge, but for C++?
When I think python challenge, I do not mean only a set of problems to be solved with C++ (for that I could probably use the same problems of python challenge), but rather problems that will probably be best solved using C++ STL, special features of the language, etc.
For example, there is one python challenge that is specifically designed to teach you how to use pickle, a serializing library for python.
Until now, I only know programming contests problems, but they could also be solved with C, java or other languages.
Google Code Jam problems frequently have analyses with snippets of C++ code, probably because C++ is by far the most popular language used for solving code-jam problems. The latter also allows you to see many C++ constructs cleverly employed, as code-jam allows you to download the solutions by all the competitors. As most code is C++, you’ll get to learn a lot of nice C++ tricks for efficient code.