Hi my name is Arjun, and being a Professional Hacker I won’t recommend this book to anyone. The author seems to be absent minded professor, and he wrote the codes which gives a "Declaration Syntax Error" in C. I had learnt C programming from YouTube Videos and it had helped me out, but this one is extremely annoying and not a friendly book to the newbie coders and as well as the Hackers. So I won’t recommend this book to learn C.