Part 1 — Definition

A Class is a template or blueprint for creating objects. It groups data and functions together. An Object is a specific instance of a class. For example, if "Car" is a class, your specific "Red Honda" is an object.

Part 2 — Syntax

class Car {
public: // Access Specifier
    string brand;
    void drive() { cout << "Driving..."; }
};

Car myCar; // Create Object

Part 3 — Example

Problem: Model a "Student" class and display their name.

class Student {
public:
    string name;
    void introduce() {
        cout << "My name is " << name;
    }
};

int main() {
    Student s1;
    s1.name = "Ali";
    s1.introduce();
    return 0;
}

Part 4 — Video

Video: Coming Soon

Part 1 — Definition

A Constructor is a special function that runs automatically when an object is created. Encapsulation is the practice of hiding internal data (Private) and providing public methods to access it (Getters/Setters).

Part 2 — Syntax

class Box {
private:
    int size;
public:
    Box(int s) { size = s; } // Constructor
};

Part 3 — Example

Problem: Protect an account balance from direct modification.

class Account {
private:
    double balance;
public:
    Account(double initial) { balance = initial; }
    void deposit(double amt) { balance += amt; }
    double getBalance() { return balance; }
};

Observation: Private data ensures that the balance cannot be set to a negative number by mistake.

Part 4 — Video

Video: Coming Soon