New Mansoura University Faculty of Computer Science and Engineering Class Concepts Quiz

What is a member function in object-oriented programming?

Which section of the program typically contains the member function definitions?

What is the purpose of the 'setRadius' member function in the given code?

What happens if the 'getPerimeter' member function is called before setting the radius of a Circle object?

In object-oriented programming, what is a common way to ensure encapsulation?

What is the primary purpose of access modifiers in a class?

Which of the following statements accurately describes the role of constructors in a class?

What is the primary purpose of the this pointer in C++?

Which of the following statements accurately describes the relationship between a class and an object?

What is the primary purpose of destructors in a class?

Classes and Objects

A type is an abstraction from which instances are created, allowing multiple instances from a single type.

Classes and Instances

A class represents a user-defined type.
An object represents an instance of a class.

Attributes and Behaviors

An attribute is a characteristic of an instance (e.g., Weight).
A behavior is an operation that an instance can perform (e.g., Run).

Class Definition

A class definition consists of data members (variables) and member functions (functions).
Data members represent attributes, and member functions represent operations.

Class Example: Circle

The Circle class has a private data member: radius.
The Circle class has public member functions: setRadius, getRadius, getArea, and getPerimeter.

Member Functions

Member functions can be defined inside or outside the class definition.
setRadius is a member function that sets the radius of the Circle object.
getRadius, getArea, and getPerimeter are member functions that return the radius, area, and perimeter of the Circle object, respectively.

Access Modifiers

Private access modifier: variables or functions can only be accessed within the same class.
Public access modifier: variables or functions can be accessed from anywhere.

Instantiation

Creating an object from a class is called instantiation.
Creating multiple objects from a class is possible, and each object has its own set of attributes and behaviors.

Test your knowledge on class definition, access modifiers, member functions, object instantiation, structures, constructors, destructors, object life cycle, instance members, the 'this' pointer, static members, and separate compilation in computer science and engineering.