📚 Library Management System

A console-based Library Management System built in C++ using Object-Oriented Programming (OOP), featuring book inventory management, member registration, book issuing/returns, overdue tracking, and file-based data persistence.

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📌 About

This project was developed during my 2nd Semester at Bahria University Islamabad as part of the Computer Programming course. It simulates a real-world library system with separate access levels for administrators and members, and is preserved on GitHub to document my progress and showcase my growth as a Computer Engineering student.

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✨ Features

Module	Functionality
🔐 Admin Authentication	Password-protected access to the administrator menu (3 attempts)
📖 Book Management	Add, remove, search, modify, and display all books
👥 Membership Control	Add, remove, search, modify, and display all members
🔑 Member Authentication	ID + password login for members before issuing/returning books
🔄 Issue & Return	Issue books to members and process returns, with automatic quantity updates
⏰ Overdue Tracking	Check and list all currently overdue books with due dates
💾 File Handling	Persistent storage via bookRecords.txt, memberRecords.txt, and dueDates.txt

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🖥️ Demo

                Library
                Management
                System

Press Enter key to continue
========================================
        MAIN MENU
========================================
 1. Issue a book
 2. Return a book
 3. Administrator menu
 4. Quit the program
========================================
Enter Your Choice : (1-4) :

                "ADMINISTRATOR MENU"
========================================
 1. Add a new book
 2. Remove an existing book
 3. Display all books
 4. Search for a specific book
 5. Modify a book
 6. Membership Control menu
 7. Check overdue books
 8. Back to main menu
========================================
Enter your choice (1-8) :

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🆔 Data Format Guide

A quick reference for the ID/password formats the system expects:

Field	Format	Example
📕 Book ID	B + 3-digit number	B001, B045, B097
🎓 Member ID	Bahria enrollment format	09-132242-032
🔑 Member Password	Free-text, set by the member at registration	(custom, chosen by member)
🛡️ Admin Password	Fixed credential defined in source (adminPassCheck() in lms.cpp)	(hardcoded — not stored in a file)

💡 Member IDs and passwords are stored in memberRecords.txt, while the admin password is set directly in the source code rather than read from a file.

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🛠️ Tech Stack

• Language: C++
• IDE: Visual Studio 2022
• Concepts: Object-Oriented Programming (Classes: book, member) · File Handling (fstream) · String Manipulation (sstream, stoi) · Date/Time Handling (ctime) · Console I/O (conio.h)

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📁 Project Structure

Library-Management-System/
├── 📄 lms.cpp                # Core application logic (book & member classes, menus)
├── 📄 bookRecords.txt        # Book inventory data (auto-updated)
├── 📄 memberRecords.txt      # Member registration data (auto-updated)
├── 📄 dueDates.txt           # Issued book due dates (auto-updated)
└── 📄 README.md

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🚀 Run Locally

1. Clone the repository

git clone https://github.com/muhammadshoaib-ce/Library-Management-System.git

2. Open in Visual Studio 2022

File → Open → Folder/Project → lms.cpp

3. Build & Run

Ctrl + Shift + B   →   Build Solution
Ctrl + F5          →   Run without Debugging

⚠️ Make sure bookRecords.txt, memberRecords.txt, and dueDates.txt are in the same directory as the compiled .exe

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📚 Lessons Learned

• ✅ Implementing Object-Oriented Programming with classes for real-world entities
• ✅ Designing multi-level menu systems (Main → Admin → Membership)
• ✅ Building authentication flows with limited login attempts
• ✅ File I/O (fstream) for persistent storage across program runs
• ✅ Managing relational data across multiple text files (books, members, due dates)
• ✅ Handling dates and overdue logic using ctime

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🌱 Future Enhancements

• 🔹 Refactor file handling into a dedicated data-access layer
• 🔹 Add fine calculation for overdue books
• 🔹 Replace flat text files with SQLite or MySQL database
• 🔹 Add book categories and advanced search filters
• 🔹 Encrypt stored passwords instead of plain text
• 🔹 Build a GUI using Qt or a web front-end

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👤 Author

Muhammad Shoaib Computer Engineering Student — Bahria University, Islamabad

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