Behavioral Design Patterns in C++ - Account Class

The lecture demonstrates the use of the Memento pattern to manage the state of an account. It begins with creating an Account clause to perform transactions and save states. The Memento pattern is introduced to store and restore the account's state without exposing its balance. A caretaker is created to manage these states. The lecture concludes with generating a class diagram and a preview of using the Memento pattern in a game context.

What is the primary purpose of the Account class introduced in the lecture?

• To handle user authentication

• To perform transactions and save states

• To manage user profiles

• To calculate interest rates

Why is the Memento pattern used in the context of the Account class?

• To enhance security features

• To expose the balance to external classes

• To restore the account to a previous state without exposing the balance

• To improve transaction speed

What role does the Memento class play in the Memento pattern?

• It calculates the final balance

• It manages user sessions

• It stores the internal state of the Account class

• It acts as the originator of transactions

How does the Caretaker class contribute to the Memento pattern?

• It calculates interest on the account

• It stores and manages the mementos

• It initializes the account balance

• It performs transactions on the account

What is demonstrated by generating the class diagram at the end of the lecture?

• The security features of the application

• The user interface design

• The structure of the Memento pattern implementation

• The performance of the Account class