Although it is unfortunate that this book does not come with the answers to the exercises, (an e-mail response from KNKING himself stated that the book was used as a study text in many university courses and it was his responsibility to protect the authors who might assign the exercises as assignments) it is an extremely well thought out and methodicaly laid out book. Exercises increase in difficulty as the book goes on. Those who had problems with the so called algebra were probably never meant to learn C anyways. If you remember that PI means 3.14 and some basics like circumference, area, volume you'll be fine with this book. Remember C doesn't allow anything more than adding, subtracting, dividing and multiplying. All other manuevers must be derrived from these. So do not be dissauded by others who claim that the math is too complicated. (Exercise 5 on page 30 is easy as pie - ignore that boston person). I had no previous experience with any programming language and am working my way through the book with ease and speed.