C

• A Tutorial on Pointers and Arrays in C
• Advanced Linux Programming
• Beej's Guide to C Programming
• Beej's Guide to Network Programming
• Build Your Own Lisp
• C Programming - Wikibooks
• Deep C
• Essential C (PDF)
• Learn C the hard way
• Object Oriented Programming in C (PDF)
• The C book
• The Craft of Text Editing or A Cookbook for an Emacs - Craig A. Finseth
• The GNU C Programming Tutorial
• The New C Standard - An Annotated Reference
• TONC GBA Programming - Game Boy Advance Development
• Using C on the UNIX System - David A. Curry

C++

• C++ Annotations
• C++ Cookbook (PDF)
• C++ GUI Programming With Qt 3
• C++ Succinctly, Syncfusion (PDF, Kindle) (Just fill the fields with any values)
• CS106X Programming Abstractions in C++
• Data Structures and Algorithms with Object-Oriented Design Patterns in C++
• Financial Numerical Recipes in C++ - Bernt Arne Ødegaard
• Game Programming Patterns
• Google's C++ Style Guide
• How To Think Like a Computer Scientist: C++ Version - Allen B. Downey
• Introduction to Design Patterns in C++ with Qt
• Learn C++. (PDF, Online)
• Matters Computational: Ideas, Algorithms, Source Code, by Jorg Arndt (PDF)
• Open Data Structures (In C++) (PDF)
• Software Design Using C++ - Br. David Carlson and Br. Isidore Minerd
• Software optimization resources by Agner Fog
• The Boost C++ libraries
• The Rook's Guide to C++ (PDF)
• Thinking in C++, Second Edition, Vol. 1. (Vol. 2) - Bruce Eckel
• Also see: The Definitive C++ Book Guide and List
• Object Oriented Programmming