Online C/C++ Books

Teach Yourself C++ in 21 Days - You can read this whole C++ book for free (and I paid 20 bucks for it!)

Who's Afraid of C++? - Free online book.

Optimizing C++ - the WWW version - Free online C++ book.

C Elements of Style - Free online C programming book.

Compilers and Compiler Generators: an introduction with C++

Data Structures and Algorithms with Object-Oriented Design Patterns in C++ - Free online C++ programming book.

Numerical Recipes in C (PDF) - Free downloadable book.

Thinking in C++ - Free downloadable book.

Teach Yourself Visual C++ 5 in 24 Hours - Free online book.

Visual C++ 4 Unleashed - Free online Visual C++ book.