C++ Websites, C++ Libraries

Tutorial、home page

https://isocpp.org/

http://www.cprogramming.com/

http://www.tutorialspoint.com/cplusplus/

http://www.gotw.ca/

http://www.stroustrup.com/C++11FAQ.html

http://cpp1x.org/

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C and C++ ANSI/ISO Libraries（covering C++11 C++14）

http://www.cplusplus.com/

http://en.cppreference.com/w/

C++ Language and Standard Libraries on MSDN ( Modern C++, CRT and STL reference )

http://msdn.microsoft.com/zh-cn/library/hh875057.aspx

The GNU C++ Library

http://gcc.gnu.org/onlinedocs/libstdc++/

Boost

http://www.boost.org

Quick Reference for STL

http://download.csdn.net/detail/u010476094/8481491

http://www.medini.org/stl/stl.html

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Windows Programming and API

http://msdn.microsoft.com/library/windows/desktop/bg125389 ( go to the lower left corner to change the language )

Visual C++ Libraries Reference

http://msdn.microsoft.com/zh-cn/library/52cs05fz(v=vs.100).aspx

 QT  :  http://qt-project.org/

Wikipedia: List of widget toolkits

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Eigen is a C++ template library for linear algebra