This book states on the cover that it covers C99. So I tested it to see if it provided any useful information on that area. Here is what it says on two aspects of C that were added in the latest standard:
In ANSI C99, any integer expression with a positive value can be used to specify the length of a non-static array with block scope. This is also referred to as a variable-length array.
The type-generic macros defined in header file
tgmath.hunified names that can be used to call the different mathematical functions for specific real and complex floating types.
The purpose of those quotes is to highlight the problems I have with this book. If I do not already know about the subject, this book will not help me. And if I do know but need to look something up, I will probably need more detail than this book can give.