Paper Back. Each major section of the book starts with a Concept Statement, which tells the reader exactly what will be learned in that section. The text has a large number of real-world Example Programs which highlight the topic being studied. Checkpoints are questions placed at several places throughout each chapter. They check the reader's knowledge quickly after learning a new topic. Notes appear throughout the text. They are short explanations of hard to understand points.. Warnings are messages that caution the reader about certain C features that can lead to malfunctioning programs..