A command-line library catalog application written in C. This was a school project from 2013 that demonstrates fundamental programming concepts including data structures, file I/O, and modular design.

• Book Management - Add and delete books from the catalog
• Multiple Authors - Each book can have multiple authors
• Search & Display - Browse books by ID, title, or author surname
• Persistence - Load and save catalog data to text files

gcc -o library add.c delete.c displayAuthor.c display.c displayID.c displayTitle.c functions.c load.c main.c menu.c save.c

./library              # Uses default.txt
./library Books.txt    # Uses custom data file

├── main.c          # Entry point
├── menu.c          # Menu interface
├── project.h       # Data structures (Book, Author, Books)
├── add.c           # Add book functionality
├── delete.c        # Delete book functionality
├── display*.c      # Various display/search functions
├── load.c          # File loading
├── save.c          # File saving
├── functions.c     # Utility functions
└── Books.txt       # Sample data

• Modular Architecture - Separated concerns across multiple source files
• Dynamic Memory - Uses malloc for flexible author lists
• Sequential Search - Custom search implementations for different data types
• File Parsing - Custom text format for data persistence

Built in 2013 as a school project