🧑💻 Student Class (C++ Project) 📘 About This Project
This C++ program explains the basic concepts of Object-Oriented Programming (OOP). It uses a Student class to show how objects, encapsulation, and constructors work in a simple and easy way.
🧩 What is a Class?
A class is like a blueprint for creating objects. It defines what data (variables) and actions (functions) an object will have.
Example: If Student is a class, it can have data like name, degree, and CGPA, and functions like showDetails().
🧠 What is an Object?
An object is a real example (instance) of a class. If Student is a class, then student1 and student2 are two real students (objects).
Example in code:
Student student1; Student student2("Ali", "6032-ag-2024", "Software Engineering", 3.8);
🔒 What is Encapsulation?
Encapsulation means hiding important data from direct access and only allowing it through functions.
In this program:
Data like password is private → cannot be accessed directly.
Other data like name, degree, and CGPA are public → can be accessed easily.
Access Modifiers:
public: — can be used anywhere in the program.
private: — only used inside the class for security.
⚙️ What are Constructors?
Constructors are special functions that run automatically when an object is created. They are used to set values when the object starts.
Types of Constructors:
Default Constructor Runs automatically and can print a message or set default values.
Student() { cout << "Student object created!" << endl; }
Parameterized Constructor Takes arguments (data) when creating an object and assigns them automatically.
Student(string n, string ag, string deg, float cg) { name = n; ag_number = ag; degree = deg; CGPA = cg; }
🧾 Example Output Student object created! Enter Student Name: Ahmed Enter AG Number: 6032-ag-2024 Enter Degree: Software Engineering Enter CGPA: 3.5
Student Name: Ahmed AG Number: 6032-ag-2024 Degree: Software Engineering CGPA: 3.5 Password: abc123
🛠️ How to Run g++ student_class_summary.cpp -o student ./student
🏁 Summary
This program helps you understand:
What a class and object are
How encapsulation protects data
How constructors automatically set values when creating objects