On page 44, it's unclear to me why there are two "main()"'s. They can't both be in the same program so I am unsure as to which to remove. Thanks.

Are you sure?
On p 44 there are 2 differents code : databasetest.cpp & UserInterface.cpp
Those files are 2 differents files wich should be compiled and run seperately
As explained the first code is a code that help to test the classe
The second one is a more complete "application" which use the classe and involve a "user interface"
I hope this help to clarify
Regards, Philippe

40tude is correct.
There are two main's, but those are two different programs: one test program, and one User Inteface program.

Thanks to both of you. I think what got me confused was the phrase under each program that said, "Code snippet from EmployeeDB\...

I was thinking that they were both in the same project because they both had the EmployeeDB in them. Thanks again.

BTW, Great Book!!