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The Containers, Iterators and Algorithms Libraries (the Standard Template Library) The Standard Template Library (STL) is a facility for the management and manipulation of collections of objects.
C Standard library functions or simply C Library functions are inbuilt functions in C programming. The prototype and data definitions of these functions are present in their respective header files. To use these functions we need to include the header file in our program.
Libaries consist of a set of related functions to perform a common task; for example, the standard C library, 'libc. a', is automatically linked into your programs by the “gcc” compiler and can be found at /usr/lib/libc. a. Standard system libraries are usually found in /lib and /usr/lib/ directories.
STL and Boost are musts.
SQLite provides a completely embedded, full-featured relational database in a few 100k that you can include right into your project. It's also a highly marketable skill because of its high presence (it's included in Mozilla Firefox as well as Android and iOS).
If you're interested in creating user interfaces, look into ncurses -- it's the library that was used to create many terminal user interfaces and can be very useful for creating games and shell utilities. Qt is a good GUI framework for C++.
If you're interested in graphics or creating games, consider SDL or OpenGL (or DirectX if you don't mind only working on Windows).
Of course, there are thousands of interesting libraries. It really depends on what you're interested in.
If you're into Image processing etc, then OpenCV might be interesting to have a play around with.
Every C++ programmer should first play around with these two libraries:
For GUI
Why not try OGRE and peek into 3D graphics?
Visualization Library could be of interest. Check out this Gallery
Visualization Library is a C++ middleware for high-performance 2D and 3D graphics applications based on the industry standard OpenGL 1.x-4.x, designed to develop portable applications for the Windows, Linux and Mac OS X operating systems.
Bullet Physics Library is an open source physics engine featuring 3D collision detection, soft body dynamics, and rigid body dynamics. It is used in games, and in visual effects in movies.
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