C++论坛

http://forum.csdn.net/BList/Cpp/UnClosedList

http://www.vckbase.com/bbs/

C/C++ Reference
http://www.cppreference.com/

C++ Library Reference
http://www.cplusplus.com/ref/

Standard C++ Library Class Reference at Rogue Wave
http://www.roguewave.com/support/docs/hppdocs/stdref/

Dinkum C++ Library Reference Manual.
http://www.dinkumware.com/refxcpp.html