OOP principles overview in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a class named Car.

C++

class [1] {
public:
    void drive() {}
};

Drag options to blanks, or click blank then click option'

ACar

BVehicle

CDrive

DEngine

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different class name than requested.

The class name should be Car as specified.

2fill in blank

medium

Complete the code to create an object named myCar of class Car.

C++

Car [1];

Drag options to blanks, or click blank then click option'

AmyCar

Bdrive

CCar

Dvehicle

Attempts:

3 left

💡 Hint

Common Mistakes

Using the class name instead of the object name.

The object name should be myCar as requested.

3fill in blank

hard

Fix the error in the code to access the drive method using the object myCar.

C++

myCar.[1]();

Drag options to blanks, or click blank then click option'

Adrives

BDrive

Cdrive

DdriveCar

Attempts:

3 left

💡 Hint

Common Mistakes

Capitalizing the method name incorrectly.

The method name is drive exactly as declared in the class.

4fill in blank

hard

Fill both blanks to define a class Person with a private age and a public method to get age.

C++

class Person {
private:
    int [1];
public:
    int [2]() { return age; }
};

Drag options to blanks, or click blank then click option'

Aage

BgetAge

CsetAge

DageValue

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable or method names.

The private variable is named age and the public method to get it is getAge.

5fill in blank

hard

Fill all three blanks to implement inheritance where Student inherits from Person and adds a method to get grade.

C++

class Student : public [1] {
public:
    int [2]() { return grade; }
private:
    int [3];
};

Drag options to blanks, or click blank then click option'

APerson

BgetGrade

Cgrade

DStudent

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong base class or method names.

Student inherits from Person. It has a method getGrade and a private variable grade.