18. A base class may have at most ________ child class derived from it. Select o

Question

18.

A base class may have at most ________ child class derived from it.

Select one:

a. 1

b. 2

c. 12

d. any number

19

If the following function is in a base class, which of the following are polymorphic declarations of the same function in the derived class?
virtual void print( ostream& out);

Select one:

a. virtual void print ( ostream& out);

b. void print( ostream& out);

c. void print();

d. virtual void print();

e. virtual void print ( ostream& out); and void print( ostream& out);

f. virtual void print ( ostream& out); and virtual void print();

20.

The assignment operator is inherited from the base class.

Select one:

True

False

21.

Which of the following should be virtual if a base class uses dynamic memory allocation?

Select one:

a. the constructor

b. the copy constructor

c. the print function

d. the destructor

22.

The base class has everything that is in the derived class and more.

Select one:

True

False

23.

All member functions in a base class should be listed as virtual functions.

Select one:

True

False

24.

If the member variables in the base class are listed as protected, then who can access or modify those variables?

Select one:

a. friends of the base class

b. friends of the derived class

c. members of the base class

d. members of the derived class

e. friends of the base class and friends of the derived class

f. members of the base class and members of the derived class

g. All of these

25.

An object of a derived class can be stored in a base class variable.

Select one:

True

False

Explanation / Answer

18 - D
19 - E
20 - False
21 - D
22 - False
23 - False
24 - g
25 - True

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