A C++ implementation of a privacy-first messaging platform — reimagining Saraha with a data-structures twist. Built as a command-line interface (CLI) application, this project focuses on anonymous, ID-only messaging with efficient use of STL containers and clean file handling.
✅ Built for a university Data Structures course
💻 Developed in C++
👤 User Registration & Login
Ensures unique usernames
Includes password validation & security
Credentials stored securely (no plaintext passwords)
💬 Anonymous Messaging
Messages display only the sender’s ID, keeping identities private
Option to show sender's name if they opt in (via a checkbox)
↩️ Undo Feature
Only the sender can undo their most recent message
Undo removes the message pair (sender + recipient copy)
👥 Contact Management
Manually add/remove contacts
Removing a contact does not delete message history
🔍 Search & Sort
Search contacts by ID
Sort contacts by number of exchanged messages
⭐ Favorites
Mark/unmark favorite messages
Automatically removes the oldest favorite when limit is reached
💾 Persistent Storage
Loads data from files on launch
Writes updated data to files on exit
🧠 Data Structures Used Structure Purpose unordered_map Fast lookup for users and messages vector Stores contact lists and messages deque Manages favorite messages (FIFO removal) stack Undo last message actions 🛠 Tech Stack
Language: C++
IDE: Qt Creator
Standard Library: STL (C++ Standard Template Library)
🗃️ File Structure
users.txt – Stores user credentials and info
messages.txt – Holds message logs
contacts.txt – Tracks contact relationships
favorites.txt – Manages favorite messages
🌐 How It Works
Pure CLI-based interface (CMD version)
No names or photos by default – just ID-based messaging
Optionally reveal sender’s name through a "Show Name" checkbox
Made By
Yomna El-Kobesy
Mariam Muhammad
Mariam sayed
Arwa Ahmed
Sara Saeed
Esraa Ragb
Safaa Muhammud