16. One drawback to returning an error code from a function is _____

A. functions cannot return error codes
B. error codes must be integers, and some functions can’t return an integer
C. a function can return only one value, so it can return only the error code
D. a function that returns an error code will identify all returns as errors

17. Assuming the following three operators appear in an expression (without parentheses), which of the operators will be performed first?

A. &&
B. !
C. ||

18. The code that you enter into a C++ program is called _____

A. console code
B. object code
C. project code
D. source code

19. If a base class member is private, then

A. if a derived class uses the public access specifier, the data member becomes public
B. if a derived class uses the protected access specifier, the data member becomes protected
C. both (a) and (b)
D. neither (a) nor (b)

20. Which of the following instructions tells C++ to merge the source code from the iostream.h file into the current file?

A. #include <iostream.h>
B. #include iostream.h
C. #include <iostream.h>
D. #merge iostream.h
E. None of the above