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Welcome to the Constructors and Destructors MCQs Page

Dive deep into the fascinating world of Constructors and Destructors with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Constructors and Destructors, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Constructors and Destructors, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming.

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Check out the MCQs below to embark on an enriching journey through Constructors and Destructors. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Constructors and Destructors. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Constructors and Destructors MCQs | Page 8 of 9

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Q71.
The destructors ____________

a.

Have a return type

b.

May have a return type

c.

Of derived classes have return type

d.

Doesn’t have a return type

Discuss
Answer: (d).Doesn’t have a return type
Q72.
The destructor can be called before the constructor if required.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Q73.
Which among the following describes a destructor?

a.

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

b.

A special function that is called to delete the class

c.

A 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

Discuss
Answer: (a).A special function that is called to free the resources, acquired by the object
Q74.
When a destructor is called?

a.

After the end of object life

b.

Anytime in between object’s lifespan

c.

At end of whole program

d.

Just before the end of object life

Discuss
Answer: (d).Just before the end of object life
Q75.
Which among the following is correct for abstract class destructors?

a.

It doesn’t have destructors

b.

It has destructors

c.

It may or may not have destructors

d.

It contains an implicit destructor

Discuss
Answer: (a).It doesn’t have destructors
Q76.
If in multiple inheritance, class C inherits class B, and Class B inherits class A. In which sequence are their destructors called, if an object of class C was declared?

a.

~C() then ~B() then ~A()

b.

~B() then ~C() then ~A()

c.

~A() then ~B() then ~C()

d.

~C() then ~A() then ~B()

Discuss
Answer: (c).~A() then ~B() then ~C()
Q77.
Choose the correct sequence of destructors being called for the following code: 
class A{ };
class B{ };
class C: public A, public B{ };

a.

~A(), ~B(), ~C()

b.

~B(), ~C(), ~A()

c.

~A(), ~C(), ~B()

d.

~C(), ~B(), ~A()

Discuss
Answer: (d).~C(), ~B(), ~A()
Q78.
When is the destructor of a global object called?

a.

Just before end of program

b.

Just after end of program

c.

With the end of program

d.

Anytime when object is not needed

Discuss
Answer: (a).Just before end of program
Q79.
How the constructors and destructors can be differentiated?

a.

Destructor have a return type but constructor doesn’t

b.

Destructors can’t be defined by the programmer, but constructors can be defined

c.

Destructors are preceded with a tilde (~) symbol, and constructor doesn’t

d.

Destructors are same as constructors in syntax

Discuss
Answer: (c).Destructors are preceded with a tilde (~) symbol, and constructor doesn’t
Q80.
Destructors doesn’t accept parameters.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Page 8 of 9

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