C Elements of Style

Though somewhat dated, this online book still contains much useful advice on programming style and organization.

Contents include:

• Style and Program Organization
• File Basics, Comments, and Program Headings
• Variable Names
• Statement Formatting
• Statement Details
• Preprocessor
• Directory Organization and Makefile Style
• User-Friendly Programming
• Rules

C++ In Action: Industrial-Strength Programming Techniques

This free online book attempts to provide a comprehensive guide to C++ software engineering for maximum performance, reliability, and maintainability. The reader witnesses the development of a simple parser and a symbolic calculator starting as a simple command-line program, gradually developing into a full-fledged GUI Windows application.

Downloadable code from the sample projects is also available.

C++: A Dialog - Programming with C++ Standard Library

This is a highly effective tutorial book on standard C++ that requires no prior knowledge of programming.

From the preface:
Is this book for you? If you're a programmer in a language other than C++ and you want to upgrade your skills, then you shouldn't have much difficulty figuring that out for yourself by reading a few pages. But what if you have no previous programming experience? In that case, here's a little quiz that may help you decide:

1. Do you want to know how the programs in your computer work inside and how to write some of your own?
2. Are you willing to exert yourself mentally to learn a complex technical subject?
3. Do you have a sense of humor?

If you've answered yes to these questions and follow through with the effort required, then you will get a lot out of this book.

Optimizing C++

This free online book provides working programmers with a practical, real-world approach to program optimization. It draws on the author's nearly 30 years of experience as a programmer in diverse fields of application, during which he has become increasingly concerned about the amount of effort spent in reinventing optimization techniques rather than applying those already developed.

The C Book

This is the online version of The C Book, second edition. While the print version of this book is no longer in print, its content is still very relevant today for anyone interested in C programming.

Contents include:

• Variables & arithmetic
• Control flow
• Functions
• Arrays & pointers
• Structures
• Preprocessor
• Specialized areas
• Libraries
• Complete Programs
• Answers