My knowledge of C++ is limited; so, would you please tell me what is C++11?
C++11 is the newer standard of C++ that came out in 2011. Older compilers (VS2008) don't really support it. If you upgrade your version of VS (or some other compiler like clang,gcc), you'll get a lot of new functionality like this.
Also, can you suggest me how to convert to string on VS2008?