🏋️ Gym Membership Management System

A robust C++ console application built with advanced Object-Oriented Programming principles.

View Features · How to Run · OOP Concepts

📖 Introduction

The Gym Membership Management System is a modular C++ application designed to digitize gym operations. It handles various membership tiers (Regular, Premium, Student), calculates fees dynamically using Operator Overloading, and ensures data persistence through file handling.

This project was developed as a case study for Object-Oriented Programming (OOP), demonstrating efficient code reusability and architecture.

---

🚀 Features

Feature	Description
👥 Member Management	Add, Remove, and View members of different categories.
💰 Smart Fee Calculation	Calculates fees based on duration, applying discounts automatically for Students or Long-term Premium members.
💾 Data Persistence	Automatically saves and loads member records from a text file (members.txt).
🔐 Encapsulation	Secure data handling with private attributes and public interfaces.
➕ Extra Services	Ability to add optional services (like Personal Trainers) to the fee structure.

---

🧩 OOP Concepts Applied

This project is a practical implementation of the four pillars of OOP:

Concept	Implementation in Project
Inheritance	Member (Base) → RegularMember, PremiumMember, StudentMember (Derived).
Polymorphism	display() and operator* are virtual functions, behaving differently based on the object type.
Encapsulation	All member data (Name, ID, Fee) is private; accessed only via methods to ensure integrity.
Abstraction	The complex logic of fee calculation and file parsing is hidden behind simple function calls in GymManager.
Operator Overloading	• operator*: Calculates total fee (Monthly Fee × Months). • operator+: Adds extra charges (e.g., Locker Fees).

---

🛠️ Installation & Usage

📋 Prerequisites

• A C++ Compiler (GCC, MinGW, or Clang).
• Git (optional, for cloning).

⚙️ Steps to Compile & Run

1. Clone the Repository

   git clone https://github.com/hadileey/Gym-Management.git
   cd Gym-Management

2. Compile the Code This command links the headers in the include folder with the logic in src.

   g++ -Iinclude src/*.cpp -o gym_system

3. Run the Application

   • Windows:

     .\gym_system.exe

   • Linux / Mac:

     ./gym_system

---

🧑🏻‍💻 Sample Output

_{👆 Click on any image to maximize}

---

📂 Project Structure

GymManagementSystem/
├── 📂 include/           # Header files (.h)
│   ├── GymManager.h
│   ├── Member.h
│   ├── PremiumMember.h
│   ├── RegularMember.h
│   └── StudentMember.h
├── 📂 src/               # Source files (.cpp)
│   ├── GymManager.cpp
│   ├── Member.cpp
│   ├── main.cpp
│   └── ...
├── 📂 data/              # Database
│   └── members.txt       # Auto-generated file
└── README.md

---

🧑🏻‍💻 Author

Hadil K K Computer Science & Engineering Student KIT - BE CSE B

_{Built with ❤️ using C++ and OOP Principles.}