The GNU C++ Library
This book is a collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself. The C++ Standard Library provides several generic containers, functions to utilize and manipulate these containers, function objects, generic strings and streams, support for some language features, and everyday functions for tasks such as finding the square root of a number.
Author(s): GNU
NA Pages 
C++ Reference Manual by cppreference.com
This PDF covers the following topics related to C++ : C++ Standard Template Library, C++ Vectors, C++ Double-ended Queues, C++ Lists, C++ Priority Queues, C++ Queues, C++ Stacks, C++ Sets, C++ Multisets, C++ Maps, C++ Multimaps, C++ Bitsets.
Author(s): cppreference.com
177 Pages
C++ Programming by Wikibooks.org
This book covers the C++ programming language, its interactions with software design and real life use of the language. It is presented in a series of chapters as an introductory prior to advance courses but can also be used as a reference book.
Author(s): Wikibooks.org
NA Pages
This note covers the following topics: Writing a Basic C++ Program, Understanding Errors, Comments, Keywords, Identifiers, Variables, Control Structures, Functions in C++, Classes and Objects, Arrays, Inheritance, Pointers and Working with Files.
Author(s): Ritu Arora
124 Pages
Objective of this note is to provide rapid training in elements of C++ syntax, C++ procedural programming, C++ object oriented programming, numerous and actual C++ code for those with some basic prior programming experience.
Author(s): C. David Sherrill
185 Pages
