C is a general purpose programming language. It is closely associated with UNIX and borrows many of its features from B language. It is a procedural language which uses top down approach in program designing. While both C and C++ are case sensitive, latter is an object oriented language which uses bottoms up approach for program designing. C++ was introduced as an extension to C language. Another major feature of C++ is that it allows zero overhead abstractions based on hardware mappings. C++ is generally considered to have better reusability and readability than C. It is used extensively system softwares, video games and operating systems. This book is compiled in such a manner, that it will provide in-depth knowledge about the theory and practice of C and C++. Also included herein is a detailed explanation of the various concepts and applications of C and C++ programming languages. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge.