There are five books which can change the one from low level to a very good programmer these books are sam teach your self c+ in 21 days jaselibrity and berly johanson all about c+ are avilible in this book the 2nd book is object oriented programming in c+ or java etc these books are writen by lafore the 3rd one is thinking in c+ or java etc this is also the best book for learn any programming language writen by bruce eckel the 4th one effective c+ is the book writen by scott meyer which is one of the best book for learning c+ and the 5th one is let us java which is writen by yashwant kanetkar