Objects and Classes - C++

1.	What happens when we try to compile the class definition in following code snippet? class Birds {}; class Peacock : protected Birds {};
	A. It will not compile because class body of Birds is not defined. B. It will not compile because class body of Eagle is not defined. C. It will not compile because a class cannot be protectedly inherited from other class. D. It will compile succesfully.

2.	Which of the following statements is incorrect?
	A. Friend keyword can be used in the class to allow access to another class. B. Friend keyword can be used for a function in the public section of a class. C. Friend keyword can be used for a function in the private section of a class. D. Friend keyword can be used on main().

3.	Which of the following statement is correct regarding destructor of base class?
	A. Destructor of base class should always be static. B. Destructor of base class should always be virtual. C. Destructor of base class should not be virtual. D. Destructor of base class should always be private.

4.	Which of the following two entities (reading from Left to Right) can be connected by the dot operator?
	A. A class member and a class object. B. A class object and a class. C. A class and a member of that class. D. A class object and a member of that class.

5.	How can we make a class abstract?
	A. By making all member functions constant. B. By making at least one member function as pure virtual function. C. By declaring it abstract using the static keyword. D. By declaring it abstract using the virtual keyword.