Of course it is not too important but I think that one more potential errata should be added on the book web-page. It concerns question number 13 of assessment test
. Literally the sentence in the book says "Since luck is not less than 10, the second expression,
--luck, will be evaluated, and since the pre-increment operator was used, the value returned will be 9, which is less than 10". But actually as it follows from the text pre-decrement operator is used for variable luck.