Base class and derived class in C Sharp (C#) - Mini Project: Build & Apply

Base class and derived class

📖 Scenario: You are creating a simple program to represent vehicles. Each vehicle has a brand name. Cars are a special type of vehicle that also have a model name.

🎯 Goal: Build a base class called Vehicle with a brand field, then create a derived class called Car that adds a model field. Finally, display the brand and model of a car.

📋 What You'll Learn

Create a base class named Vehicle with a public string field brand

Create a derived class named Car that inherits from Vehicle

Add a public string field model to the Car class

Create an instance of Car with brand "Toyota" and model "Corolla"

Print the brand and model of the car in the format: "Brand: Toyota, Model: Corolla"

💡 Why This Matters

🌍 Real World

Understanding base and derived classes helps organize code when working with related objects, like different types of vehicles.

💼 Career

Inheritance is a key concept in object-oriented programming used in many software development jobs to create reusable and organized code.

1

Create the base class Vehicle

Create a public class called Vehicle with a public string field named brand.

C Sharp (C#)

// Your code here

Need a hint?

Think of Vehicle as a general type that holds the brand name.

2

Create the derived class Car

Create a public class called Car that inherits from Vehicle. Add a public string field named model to the Car class.

C Sharp (C#)

public class Vehicle
{
    public string brand;
}

// Your code here

Need a hint?

Use : to inherit from the base class Vehicle.

3

Create an instance of Car and set fields

Create a new Car object named myCar. Set its brand field to "Toyota" and its model field to "Corolla".

C Sharp (C#)

public class Vehicle
{
    public string brand;
}

public class Car : Vehicle
{
    public string model;
}

// Your code here

Need a hint?

Remember to create the object with new Car() and then set the fields.

4

Print the brand and model of the car

Write a Console.WriteLine statement to print the brand and model of myCar in the format: "Brand: Toyota, Model: Corolla".

C Sharp (C#)

public class Vehicle
{
    public string brand;
}

public class Car : Vehicle
{
    public string model;
}

Car myCar = new Car();
myCar.brand = "Toyota";
myCar.model = "Corolla";

// Your code here

Need a hint?

Use Console.WriteLine with string interpolation to show the values.