Encapsulation C++

What is encapsulation in C++?

• A way to create multiple classes

• The process of bundling related data members and functions together in a single class

• A function that modifies variables

• A mechanism for defining constants

Which of the following is an advantage of encapsulation?

• It allows variables to be accessed from any class

• It makes code cleaner and easier to read by grouping related data and functions

• It forces all data members to be public

• It removes the need for constructors

What is the difference between encapsulation and data hiding?

• Encapsulation is about grouping related code, while data hiding restricts access to certain members

• Data hiding is the same as encapsulation

• Encapsulation always requires data hiding

• Encapsulation hides implementation details, but data hiding allows full access to class members

Which of the following correctly describes data hiding in C++?

• It makes all class members public

• It restricts access to data members using access specifiers like `private` or `protected`

• It allows unrestricted access to all class members

• It only applies to functions, not variables

What is the primary purpose of setter functions in C++?

• To allow read-only access to private data members

• To modify private data members from outside the class

• To perform calculations on variables

• To initialize objects

Which access specifier is used to hide class members from other classes in C++?

• public

• private

• protected

• default

What is the purpose of getter functions in C++?

• To return the values of private data members

• To modify private data members

• To define new variables

• To create objects of a class

In Example 1 of the encapsulation discussion, what was bundled together inside the `Rectangle` class?

• Only the length variable

• The length, breadth, and a function to calculate the area

• Only the area calculation function

• A function to initialize the class

Which of the following best describes the term "data hiding"?

• Hiding the implementation of a function from the user

• Restricting access to class members using private or protected access specifiers

• Making all variables public to improve accessibility

• Providing full access to all data members from outside the class

Which of the following is an example of encapsulation?

• Defining unrelated functions and variables together

• Grouping related variables and functions inside a class

• Defining variables without functions

• Creating public variables for easy access