The concepts in this book are presented in a lucid and exhaustive manner using appropriate illustrations whenever applicable. The book deals with programming in C for the reader to learn the art of writing programs in C. Some advanced features of C have also been included. A separate chapter on linked lists with their implementation in C has been provided to ease the learning of complex concepts. The book is easy-to-understand and student-friendly with plenty of programs with complete source codes and test cases. The theory is well-supported by both review questions and programming exercises at the end of each chapter. The book also includes a comprehensive case study on simulation of OS system calls using C language.