Library Management System in C 📚

A robust and efficient Library Management System developed in C. This project demonstrates advanced file handling techniques by using CSV files as a relational database to manage books, authors, students, and borrowing transactions.

🎯 Key Features

• Relational Data Management: Manages complex relationships (Many-to-Many) between Books and Authors using KitapYazar.csv.
• CRUD Operations: Create, Read, Update, and Delete records for:
  • Books (kitap.csv)
  • Authors (yazarlar.csv)
  • Students (ogrenciler.csv)
• Borrowing System: Tracks borrowed books, due dates, and return status via KitapOdunc.csv.
• Data Persistence: All data is stored permanently in CSV files, ensuring no data loss after the program closes.
• Dynamic Reporting: Generates reports on borrowed books, student history, and library inventory.

🛠️ Technical Implementation

The project is built with a focus on low-level memory management and structured programming:

• Structs & Pointers: Used to define data models (Book, Student, Transaction) and manipulate data efficiently in memory.
• File I/O: Custom parsers to read/write CSV files, handling delimiters and newlines manually.
• Memory Management: Efficient use of buffers for string processing and record handling.
• Algorithm Logic: Implements search algorithms to link Student IDs with Book ISBNs.

📂 Database Structure (CSV)

The system operates on a file-based database architecture:

File	Description
kitap.csv	Stores book details (ISBN, Title, Publisher).
yazarlar.csv	Stores author information.
ogrenciler.csv	Stores student details.
KitapYazar.csv	Junction Table linking Books and Authors (Relational Logic).
KitapOdunc.csv	Transaction logs for borrowing and returning books.

🚀 How to Compile & Run

This project is compatible with GCC (GNU Compiler Collection).

1. Clone the repository:

   git clone [https://github.com/zeynelbyhn/Library-Management-System-C.git](https://github.com/zeynelbyhn/Library-Management-System-C.git)
   cd Library-Management-System-C

2. Compile the code:

   gcc src/main.c -o library_system

3. Run the application:

   • Windows: library_system.exe
   • Linux/Mac: ./library_system

Note: Ensure that the data/ folder containing CSV files is in the same directory as the executable, or update the file paths in the source code.

🧠 Future Improvements

• Implement a GUI using GTK or Windows API.
• Add hashing for faster search operations.
• Migrate data storage to SQL (SQLite).

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Developed as a Computer Engineering project demonstrating C programming proficiency.