C++ Developer - Polymorphism and Late Binding

This video tutorial explores polymorphism, a key principle of object-oriented programming, and its relationship with inheritance. It demonstrates how to use dynamic memory and pointers in C++ to create polymorphic references. The tutorial explains static and dynamic binding, highlighting the use of the virtual keyword to enable late binding. It also covers pure virtual functions and abstract classes, providing a challenge to implement these concepts in a project.

What is the primary focus of this lecture?

• Encapsulation

• Polymorphism

• Abstraction

• Inheritance

What is a polymorphic reference?

• A reference to a static variable

• A reference to a function

• A reference to a derived class object using a base class pointer

• A reference to a base class object

What is the default binding method used by C?

• Dynamic binding

• Late binding

• Static binding

• Virtual binding

How can you achieve dynamic binding in C++?

• By using the inline keyword

• By using the const keyword

• By using the virtual keyword

• By using the static keyword

What does the virtual keyword enable in C++?

• Encapsulation

• Inheritance

• Abstraction

• Polymorphism

What is a pure virtual function?

• A function that is always static

• A function with no implementation in the base class

• A function that cannot be overridden

• A function with a default implementation

What happens when a class has a pure virtual function?

• It becomes a concrete class

• It must have a destructor

• It can only have static methods

• It cannot be instantiated directly

What is an abstract class?

• A class that cannot be inherited

• A class with no constructors

• A class with at least one pure virtual function

• A class with only static methods

What must derived classes do if the base class has a pure virtual function?

• Delete the function

• Ignore the function

• Implement the function

• Override the function

What is the purpose of the challenge in the lecture?

• To create a new project

• To implement a pure virtual function in a derived class

• To modify the base class

• To implement a new class