Object Oriented Programming MCQs

Page No. 19

Which among the following describes a destructor?


aA special function that is called to free the resources, acquired by the object

✓


bA special function that is called to delete the class

✖


cA special function that is called anytime to delete an object

✖


d A special function that is called to delete all the objects of a class

✖


View Answer A special function that is called to free the resources, acquired by the object

Which specifier should be used for member functions of a class?


aPrivate

✖


bDefault

✖


cProtected

✖


dPublic

✓


View Answer Public

Which access specifier is usually used for data members of a class?


aPrivate

✓


bDefault

✖


cProtected

✖


dPublic

✖


View Answer Private

Which access specifier should be used so that all the parent class members can be inherited and accessed from outside the class?


aPrivate

✖


bDefault or public

✖


cProtected or private

✖


dPublic

✓


View Answer Public

If an abstract class has all the private members, then _________


aNo class will be able to implement members of abstract class

✓


bOnly single inheritance class can implement its members

✖


cOnly other enclosing classes will be able to implement those members

✖


dNo class will be able to access those members but can implement.

✖


View Answer No class will be able to implement members of abstract class

If class B inherits class A privately. And class B has a friend function. Will the friend function be able to access the private member of class A?


aYes, because friend function can access all the members

✖


bYes, because friend function is of class B

✖


cNo, because friend function can only access private members of friend class

✓


dNo, because friend function can access private member of class A also

✖


View Answer No, because friend function can only access private members of friend class

On which specifier’s data, does the size of a class’s object depend?


aAll the data members are added

✓


b Only private members are added

✖


cOnly public members are added

✖


dOnly default data members are added

✖


View Answer All the data members are added

Which access specifier should be used in a class where the instances can’t be created?


aPrivate default constructor

✖


bAll private constructors

✓


cOnly default constructor to be public

✖


dOnly default constructor to be protected

✖


View Answer All private constructors

If class A has add() function with protected access, and few other members in public. Then class B inherits class A privately. Will the user will not be able to call _________ from the object of class B.


aAny function of class A

✖


bThe add() function of class A

✖


cAny member of class A

✖


dPrivate, protected and public members of class A

✓


View Answer Private, protected and public members of class A

If a class has all the private members, which specifier will be used for its implicit constructor?


aPrivate

✖


bPublic

✓


cProtected

✖


dDefault

✖


View Answer Public

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