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Keycard System

Overview

This program simulates a basic keycard system where users can manage a list of keycards, grant or revoke access, and save/load keycard data to/from a text file.

Features

  • Add New Keycards: Users can add new keycards to the system, specifying unique card IDs and access permissions.

  • Revoke Access: The program allows users to revoke access for specific keycards. This feature is crucial for maintaining security and controlling entry permissions.

  • View Keycard List: Users can view the list of keycards in the system. This provides an overview of all registered keycards and their current access status.

  • Save and Load Keycard Data: The system supports saving keycard data to a file (cardlist.txt) and loading data from the same file. This ensures persistent storage of keycard information between program sessions.

  • Simulate Remote Door Operations: The program includes a simulation of remote door operations. Users can initiate door actions such as opening or locking, providing a visual representation through simulated green and red lights.

  • Scan Keycards: Users can scan a keycard, check its access permissions, and simulate corresponding door actions based on the card's status (access granted or denied).

Getting Started

  1. Compilation:

    • Make sure you have a C compiler installed.
    • Compile the program using your preferred compiler. Example: gcc main.c -o keycard_system

  2. Run the Program:

    • Execute the compiled program: ./keycard_system

  3. Usage:

    • Follow the on-screen instructions to navigate through the keycard system.
    • Use the admin menu to manage keycards.

File Structure

  • main.c: Main program file.
  • adminmenu.c: Admin menu functions.
  • card.h: Keycard-related struct.
  • cardlist.h: Struct for managing the list of keycards.
  • fileio.c: File I/O functions for saving and loading keycard data.
  • listcard.c: Functions for listing and printing card information.
  • cardaccess.c: Functions responsible for handling card access and modifying access permissions.
  • remotedoor.c: File simulating remote door operations, with a red-green light simulation.
  • scancard.c: Functions responsible for scanning a card, checking access permissions, and simulating door actions.
  • safeinput.c: Functions for handling user inputs throughout the program.

Sample Keycards (Default)

  • Card ID: 1212, Access Granted: Yes
  • Card ID: 1213, Access Granted: No

File Descriptions

  • cardlist.txt: Text file to save/load keycard data. Is created upon program start, if it has not yet been created.