🚀 Point of Sale (POS) System - Version 1.0

A command-line interface (CLI) Point of Sale system designed for efficient inventory management and billing operations. Developed using C++ and core data structures.

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📌 Project Overview

🔹 Core Features:

• 🛒 Inventory Management using singly linked lists
• 🧾 Billing System using queues
• ⏪ Undo/Redo Operations with stacks
• 🤖 Auto-Pilot Mode for automated customer processing
• 📂 File Handling for persistent data storage
• 📝 Feedback System for customer input

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🚀 Key Features

📦 Inventory Management

• ➕ Add/Remove products
• ✏️ Update product details (name, price, stock)
• 💰 Apply product-specific discounts
• 📊 Real-time stock display
• 💾 Auto-save to inventory.txt

💵 Billing System

• ➕ Add/Remove items from bill
• 🏷️ Tax calculation (10%)
• 👀 Bill preview & finalization
• 💳 Multiple payment methods
• 💾 Auto-save bills to bill.txt

⏪ Undo/Redo Functionality

• 🔄 Reverse/add recent actions:
  • ➕ Product additions
  • ❌ Product removals

🤖 Auto-Pilot Mode

• 🏬 Sequential customer processing
• 🔄 Automatic stock updates
• 📝 Feedback collection
• 🔑 Admin password protected exit
• 💾 Data auto-saving

📝 Feedback System

• 🗣️ Collect customer feedback
• 📄 Store in feedback.txt
• 🖥️ Simple interface

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🛠 Technologies Used

• C++17 (OOP Paradigm)
• Data Structures:
  • 📌 Singly Linked List (Inventory)
  • 📌 Queue (Billing)
  • 📌 Stack (Undo/Redo)
• File Handling for data persistence
• 📚 Standard Template Library (STL)

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🚨 Important Notes

• 🔑 Admin Password: 1234 (for Auto-Pilot Mode)
• 📂 Data Files:
  • inventory.txt
  • bill.txt
  • feedback.txt

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🛠 Setup Instructions

1️⃣ Requirements:

• 🖥️ C++ Compiler (g++ recommended)
• 💻 Terminal/Command Prompt

2️⃣ Compilation:

g++ PointOfSaleSystem.cpp -o posystem

📖 Usage Guide

📌 Main Menu Navigation

• 🛍️ Product Management
• 🧾 Billing System
• 🤖 Auto-Pilot Mode
• ℹ️ System Info

📦 Product Management

• ➕ Add/Remove products
• ✏️ Update stock/prices
• 💰 Apply discounts
• 📊 View inventory

💵 Billing Process

• 🛒 Scan products
• 🔢 Modify quantities
• 💳 Multiple payment options
• 📄 Digital receipt generation

🤖 Auto-Pilot Mode

• 🔄 Automated customer handling
• 📝 Feedback collection
• 🔐 Admin password protected exit

🔮 Future Enhancements

🚀 Planned Features

• 🖥️ GUI implementation
• 🗄️ Database integration
• 📊 Sales analytics/reporting
• 👥 Multi-user support
• 📡 Barcode scanning
• 🎟️ Customer loyalty programs

💡 Potential Improvements

• 🔍 Enhanced input validation
• 🔐 Cryptographic password storage
• 📂 JSON data storage
• 🌍 Multi-language support
• ☁️ Cloud backup integration

🤝 Contributing

We welcome contributions! Follow these steps:

1. Fork the repository
2. Create a feature branch:

   git checkout -b feature/your-feature

3. Commit changes
4. Push to branch
5. Create a Pull Request

⚡ Guidelines:

• ✅ Maintain clean code structure
• 📌 Add comments for complex logic
• 📝 Update documentation accordingly
• 🛠️ Test changes thoroughly

📜 License

This project is open-source under the MIT License. See LICENSE for details.

📢 Note: This is Version 1.0. Report issues and suggest improvements through GitHub issues.