Library-Management-System

The Library Management System you've created in C++ is an object-oriented application designed to manage a library's inventory. It includes various functionalities for both administrators (admin) and regular users. Here's a detailed explanation of the code and its functionality:

Overview

The system allows for the management of four types of items: Books, Magazines, Research Journals, and FYP Theses. The main users are admins who can manage these items by adding, modifying, deleting, or viewing them, while regular users can only view the items.

Code Structure

1. Classes and Inheritance:

   • Item (Base Class): This class represents a general item in the library. It includes basic attributes like title, author, number of copies, and price. It serves as the base class for specific item types.
   • Book, Magazine, ResearchJournal, FYP (Derived Classes): These classes inherit from Item and represent specific types of library items. Each class may have additional attributes specific to that item type (e.g., edition for books, issue number for magazines).
   • User (Base Class): This class represents a general user of the system, with basic attributes like username and password.
   • Admin and RegularUser (Derived Classes): These classes inherit from User. The Admin class has additional methods for managing items, while RegularUser is limited to viewing items.

2. Admin Functionalities:

   • Add Items: The admin can add new items to the inventory by entering details such as title, author, number of copies, price, and specific details depending on the item type.
   • Modify Items: The admin can modify existing items by updating their number of copies and price.
   • Delete Items: The admin can remove items from the inventory.
   • View All Items: The admin can view all items in the inventory, with detailed information about each.

3. User Functionalities:

   • View All Items: Regular users can view the list of all available items in the library.

4. File Handling:

   • Saving and Loading Data: The system uses file handling to save and load user and item data, ensuring persistence between program executions.

5. User Interface:

   • Menu-Driven Interface: The system is operated through a menu-driven interface, where users and admins choose options to perform different tasks.
   • Notifications: The system provides feedback to users through loading animations and success/failure notifications.

Key Functions

1. Main Function:

   • The main function initializes the system and presents the user with options to either log in as an admin or as a regular user.

2. User Authentication:

   • Admins and users must log in to access their respective functionalities. The system checks their credentials against stored data to verify their identity.

3. Admin Functionalities Implementation:

   • The admin functionalities (add, modify, delete, view) are implemented using member functions in the Admin class. These functions interact with the library's inventory, which is typically stored in a file or in memory.

4. Polymorphism and Virtual Functions:

   • The system likely uses polymorphism and virtual functions to handle different types of items through a common interface. This allows for operations on Item pointers or references, while the correct derived class functions are called based on the actual object type.

Summary

This Library Management System is a comprehensive tool for managing a library's inventory. It uses object-oriented programming principles to create a modular and extensible system. The separation of admin and user functionalities ensures that data management is secure and user-friendly. The system's use of classes, inheritance, polymorphism, and file handling demonstrates a solid understanding of advanced C++ concepts.