OOP Data Members Quiz Online Practice Test

1. What term describes the variables and constants defined within a class?

Data members

Class variables

Data attributes

Constants

2. In C++, how can data members be initialized?

Can be initialized directly in the class definition

Can only be initialized via constructors

Can be initialized either at declaration or through constructors

Cannot be initialized

3. Which statement accurately describes data member initialization?

Private data members can be initialized directly within the class declaration.

Static members receive their initialization through constructors.

Protected data members can be initialized directly within the class.

Static data members must be defined outside the class, not within constructors.

4. To use a user-defined structure as a data member type, what is required?

The structure must be defined prior to the class.

The structure should be defined after the class declaration.

The structure must be a standard predefined type.

Using structure types for data members is not allowed.

5. What is the maximum number of data members a class can have?

255

1024

Unlimited, depending on the requirements

6. What method is used to access a class's data members?

Dot operator

Arrow operator

Dot or arrow operator

Dot, arrow, or direct access

7. How can you create a pointer to a private data member of a class from outside the class?

Use a member function to return the address of the private data member

Directly access the private member with a pointer from outside

Declare the private member as a pointer within the class

It is not possible to create a pointer to a private member

8. Which statement accurately describes the use of setter() and getter() functions?

Ideal for managing data values

The sole correct method for manipulating values

Primarily designed for handling private member access

A cautionary approach, not recommended for extensive use

9. Static member functions can exclusively interact with ________

Static data members

Private data members

Protected data members

Constant data members

10. Which keyword ensures that all instances of a class share the same value for data members?

static

const

double

abstract

11. Which data members, while being private to a class, can still be inherited?

Private

Protected

Protected and Static

Privately inherited

12. Which of the following is an invalid declaration for a data member?

int a;

static int a;

abstract a;

Boolean a;

Test Name:	OOP Data Members Quiz
Subject Category:	Computer Science
Test Type:	Multiple Choice Questions
Total Score / Questions:	12 / 12
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

OOP Data Members MCQ Quiz Online Practice Test