📦 Inventory & Sales Management System

A simple inventory and sales management system with core features like adding products, updating stock, processing sales, generating reports, and undoing transactions.

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🚀 Features

🔹 Product Management

• Add new products with ID, Name, Price, and Quantity
• Update existing product details (price and quantity)
• Delete products from the inventory array

🔹 Sales & Logging

• Process sales by reducing quantity
• Maintain a sales log with product ID, quantity sold, and date/time

🔹 Search & Sort

• Search products by ID or Name
• Sort products by Price or Quantity using Bubble Sort

🔹 Reports & Alerts

• Sales Report: total sales, best-selling products, sales count
• Inventory Report: all products with current stock and prices
• Low Stock Alert: automatic alerts when stock is below threshold

🔹 Restock & Reorder

• Identify low-stock products for restocking
• Add new stock to replenish inventory

🔹 Undo Transactions

• Undo the last sale transaction
• Confirmation prompt before undo
• Support for multiple undos with limits
• Automatically updates reports and alerts

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📊 Example Workflows

1. Add Product → Enter ID, Name, Price, Quantity
2. Sell Product → Quantity decreases, sale logged
3. View Reports → Check total sales and stock levels
4. Undo Sale → Restore previous stock & update logs

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