Podcast
Questions and Answers
Which keyword is used to establish an inheritance relationship between classes in C++?
Which keyword is used to establish an inheritance relationship between classes in C++?
- `inherits`
- `derives`
- `public` (correct)
- `extends`
Consider classes Vehicle
and Car
. Which inheritance declaration correctly represents that Car
inherits publicly from Vehicle
in C++?
Consider classes Vehicle
and Car
. Which inheritance declaration correctly represents that Car
inherits publicly from Vehicle
in C++?
- class Car : public Vehicle {} (correct)
- class Car : Vehicle {}
- class Car : protected Vehicle {}
- class Car : private Vehicle {}
What type of relationship is best described by inheritance?
What type of relationship is best described by inheritance?
- Is-a (correct)
- Has-a
- Part-of
- Uses-a
If class Dog
inherits publicly from class Animal
, what is a direct consequence?
If class Dog
inherits publicly from class Animal
, what is a direct consequence?
Which of the following is true about the eat()
function in the provided code?
Which of the following is true about the eat()
function in the provided code?
In the context of inheritance, what does it mean for a class to 'inherit' from another?
In the context of inheritance, what does it mean for a class to 'inherit' from another?
Which of the following real-world scenarios best exemplifies an 'is-a' relationship suitable for inheritance?
Which of the following real-world scenarios best exemplifies an 'is-a' relationship suitable for inheritance?
If a base class Shape
has a protected member variable area
, how is this variable's accessibility affected in a derived class Rectangle
that inherits publicly from Shape
?
If a base class Shape
has a protected member variable area
, how is this variable's accessibility affected in a derived class Rectangle
that inherits publicly from Shape
?
Consider a base class Animal
with a private member name
. If Dog
inherits from Animal
, how can you access or modify name
from within Dog
?
Consider a base class Animal
with a private member name
. If Dog
inherits from Animal
, how can you access or modify name
from within Dog
?
Why is it important to determine whether an 'is-a' relationship exists before implementing inheritance between two classes?
Why is it important to determine whether an 'is-a' relationship exists before implementing inheritance between two classes?
Flashcards
Inheritance
Inheritance
A key feature in C++ that allows creating a new class (derived class) from an existing class (base class), inheriting features and adding new ones.
Is-a Relationship
Is-a Relationship
A relationship where one class is a specialized version of another class. It ensures that the derived class is a subtype of the base class.
Derived Class
Derived Class
A class that inherits properties and behaviors from another class. It can extend or modify the inherited features.
Base Class
Base Class
An existing class that provides the base for inheritance. It contains common properties and behaviors that are inherited by derived classes.
Signup and view all the flashcardsStudy Notes
- Inheritance lets programmers create new classes (derived class) from existing classes (base class).
- The derived class inherits features from the base class and can have additional features.
class Dog : public Animal
shows theDog
class inheriting from theAnimal
class.- Members of
Animal
are accessible toDog
. public
is a keyword used while inheritingDog
fromAnimal
.private
andprotected
can also be used instead ofpublic
.- Inheritance represents an is-a relationship between classes.
- Inheritance is used when an is-a relationship exists between two classes.
- Examples of is-a relationships include:
- A car is a vehicle.
- Orange is a fruit.
- A surgeon is a doctor.
- A dog is an animal.
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