You can download all the C++ programs for the exercise solutions
from here.
These codes have been zipped into a single file that you will need to
unzip.
Be sure to unzip into a directory
different from the one that contains the programs that are in the text,
as some of the file names are the same.
When you view the solution to an exercise, you will also get a list of the
files that contain the codes (if any) for that exercise.