Now you can come up to speed quickly on the basics of programming in RPG IV-the modern, modular AS/400 programming language that has gained acceptance worldwide. All you need is this easy-to-follow book from Bob Cozzi, the world's leading authority on RPG programming. Rich with practical examples and sample code, this book provides step by-step guidance to structured programming in RPG IV. Completely up-to-date with all new RPG IV features, this book tells you everything you need to understand the modern constructs of RPG IV, including figurative and named constants, operation extenders, and free-format expressions.