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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 4 of 9

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Q31.
The copy constructor can be used to:

a.

Initialize one object from another object of same type

b.

Initialize one object from another object of different type

c.

Initialize more than one object from another object of same type at a time

d.

Initialize all the objects of a class to another object of another class

Discuss
Answer: (a).Initialize one object from another object of same type
Q32.
If two classes have exactly same data members and member function and only they differ by class name. Can copy constructor be used to initialize one class object with another class object?

a.

Yes, possible

b.

Yes, because the members are same

c.

No, not possible

d.

No, but possible if constructor is also same

Discuss
Answer: (c).No, not possible
Q33.
The copy constructors can be used to ________

a.

Copy an object so that it can be passed to a class

b.

Copy an object so that it can be passed to a function

c.

Copy an object so that it can be passed to another primitive type variable

d.

Copy an object for type casting

Discuss
Answer: (b).Copy an object so that it can be passed to a function
Q34.
Which returning an object, we can use ____________

a.

Default constructor

b.

Zero argument constructor

c.

Parameterized constructor

d.

Copy constructor

Discuss
Answer: (d).Copy constructor
Q35.
If programmer doesn’t define any copy constructor then _____________

a.

Compiler provides an implicit copy constructor

b.

Compiler gives an error

c.

The objects can’t be assigned with another objects

d.

The program gives run time error if copying is used

Discuss
Answer: (a).Compiler provides an implicit copy constructor
Q36.
If a class implements some dynamic memory allocations and pointers then _____________

a.

Copy constructor must be defined

b.

Copy constructor must not be defined

c.

Copy constructor can’t be defined

d.

Copy constructor will not be used

Discuss
Answer: (a).Copy constructor must be defined
Q37.
What is the syntax of copy constructor?

a.

classname (classname &obj){ /*constructor definition*/ }

b.

classname (cont classname obj){ /*constructor definition*/ }

c.

classname (cont classname &obj){ /*constructor definition*/ }

d.

classname (cont &obj){ /*constructor definition*/ }

Discuss
Answer: (c).classname (cont classname &obj){ /*constructor definition*/ }
Q38.
Object being passed to a copy constructor ___________

a.

Must be passed by reference

b.

Must be passed by value

c.

Must be passed with integer type

d.

Must not be mentioned in parameter list

Discuss
Answer: (a).Must be passed by reference
Q39.
Out of memory error is given when the object _____________ to the copy constructor.

a.

Is passed with & symbol

b.

Is passed by reference

c.

Is passed as

d.

Is not passed by reference

Discuss
Answer: (d).Is not passed by reference
Q40.
Copy constructor will be called whenever the compiler __________

a.

Generates implicit code

b.

Generates member function calls

c.

Generates temporary object

d.

Generates object operations

Discuss
Answer: (c).Generates temporary object
Page 4 of 9

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