Learning C# Classes with a Story – Seojun and Jia’s Day 🧙‍♂️

 

👦 The Tale of Class and Instance

Once upon a time, there was a magical blueprint called Person.

This blueprint described how a person behaves:

• They have a name.

• They can eat.

• They can sleep.

• They can work.

This blueprint is called a class in programming.

But a class is just an idea until we use it to make something real — like creating Seojun and Jia from the Person class.
These are called instances.

🔮 The Magical Code

using System;

class Person {

    public string Name;

    public Person(string name)

    {

        Name = name;

    }

    public void Eat()

    {

        Console.WriteLine(Name + " is eating.");

    }

    public void Sleep()

    {

        Console.WriteLine(Name + " is sleeping.");

    }

    public void Work()

    {

        Console.WriteLine(Name + " is working.");

    }

}

class Program {

    public static void Main (string [] args)

    {

        Person p1 = new Person("Seojun");

        Person p2 = new Person("Jia");

        p1.Eat();

        p2.Eat();

        p1.Sleep();

        p1.Work();

    }

}

📤 Console Output

Seojun is eating.
Jia is eating.
Seojun is sleeping.
Seojun is working.

Let’s Break It Down




Term
Meaning
Example




Class
A blueprint for an object
Person is a class for people


Instance
A real object made from class
p1 and p2 are people from Person class



🎮 Game Idea
The Person class is your player character.
Eat() → recover HP (health)
Sleep() → rest/save point
Work() → complete quests or earn coins
Each character (instance) could have different traits and routines!