Library Management System (C - Terminal)

This project is a Library Management System built in C for the terminal.
It provides a simple way to manage users, books, and loans through file-based storage.

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Features

• User Management
  • Register new users
  • View the list of users
• Book Management
  • Register new books
  • View the list of books
• Loan Management
  • Register a new loan
  • Return an existing loan
  • View the list of loans

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Notes

• All data (users, books, loans) is stored in .txt files.
• The system runs entirely in the terminal.

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📌 Requirements

C compiler (like GCC)

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📦 How to compile and run

How to compile: Linux / Mac / Git Bash / Windows:

gcc main.c home.c system.c book.c loans.c user.c -o main

How to run: Linux / Mac / Git Bash:

./main

How to run: Windows (CMD ou PowerShell):

main.exe

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Locale Configuration (Portuguese - pt_BR.utf8)

To ensure proper display of special characters (accents and cedillas) in the terminal, you may need to configure the locale to pt_BR.utf8.
If it is not available, use C.UTF-8 as a fallback.

### ------------ Linux ------------
# List available locales
locale -a

# If "pt_BR.utf8" is listed, you’re ready to go.
# Otherwise, install it (Debian/Ubuntu example):
sudo locale-gen pt_BR.UTF-8
sudo update-locale


### ------------ macOS ------------
# Check current locale
locale

# If "pt_BR.UTF-8" is not available, use "C.UTF-8".


### ------------ Git Bash ------------
# List available locales
locale -a

# If "pt_BR.utf8" is listed, you’re ready.
# Otherwise, use "C.UTF-8".


### ------------ Windows (PowerShell) ------------
# Show current culture
Get-Culture

# Temporarily set environment variables
$env:LC_ALL="pt_BR.UTF-8"
$env:LANG="pt_BR.UTF-8"

# If not supported, use "C.UTF-8".

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Locale Fallback

If your system does not support pt_BR.utf8, you should use C.UTF-8 as a fallback in the code.
This ensures that the program still handles special characters correctly (such as accents and cedillas).

Example in C:

#include <locale.h>

int main() {
    // Preferred
    setlocale(LC_ALL, "pt_BR.utf8");

    // Fallback if pt_BR.utf8 is not available
    setlocale(LC_ALL, "C.UTF-8");

    return 0;
}

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📄 License

This project is licensed under the MIT License. See the LICENSE file for more details.

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👨‍💻 Author

Made by Michael Rocha