c-sharp-onsite-2.md

Inventory Management System

Objective

Create a console-based inventory management system for a small store with real-time tracking and alerts.

Technical Requirements

1. Data Structures

class Product {
    public string ProductId { get; set; }  // Format: XXX-999
    public string Name { get; set; }
    public int Quantity { get; set; }
    public decimal Price { get; set; }
    public Category Category { get; set; }
    public DateTime LastRestocked { get; set; }
}

enum Category {
    Electronics,
    Clothing,
    Food,
    Books
}

2. Required Functionality

a) Product Management

• Add new products with validation:
  • ProductId: Unique, format XXX-999
  • Name: 3-50 characters
  • Quantity: Non-negative
  • Price: Between $0.01 and $10000.00
  • Category: Must be valid enum value
• Update existing products
• Remove products
• Track last restock date

b) Inventory Operations

• Stock increase (restock)
• Stock decrease (sales)
• Low stock alerts (< 5 items)
• Out of stock alerts
• Calculate total inventory value
• Track product turnover

c) Reporting

• List all products
• Filter by:
  • Category
  • Price range
  • Stock level
• Sort by:
  • Name
  • Quantity
  • Price
  • Last restock date

d) Alerts System

• Immediate alerts for:
  • Low stock items
  • Out of stock items
  • High value items (>$1000)
• Daily inventory summary

3. User Interface Requirements

• Main menu with numbered options
• Sub-menus for specific functions
• Clear success/error messages
• Confirmation for critical actions
• Format currency values properly
• Format dates consistently

4. Data Validation

• Prevent duplicate ProductIds
• Validate quantity changes
• Verify price updates
• Check category assignments
• Validate date entries

Sample Interaction

=== Inventory Management System ===
1. View Inventory
2. Add Product
3. Update Stock
4. Generate Reports
5. View Alerts
6. Exit

Enter choice (1-6): 1

Current Inventory:
ID      Name            Qty   Price   Category    Last Restocked
-----------------------------------------------------------
ABC-123 Laptop         10    $899.99  Electronics 10/28/2024
DEF-456 T-Shirt        25    $19.99   Clothing   10/27/2024
GHI-789 Novel          8     $14.99   Books      10/25/2024

Low Stock Alert: Novel (8 units)
Total Inventory Value: $9,499.64

Enter product ID to view details or 'M' for menu:

Evaluation Criteria

1. Code Organization (25%)

• Class structure
• Method organization
• Variable naming
• Code documentation
• Implementation efficiency

2. Data Management (25%)

• Storage implementation
• Update handling
• Search efficiency
• Sort implementation
• Alert system

3. Error Handling (25%)

• Input validation
• Exception management
• Edge cases
• Recovery procedures
• User feedback

4. User Interface (25%)

• Menu clarity
• Information display
• Navigation logic
• Error messages
• Overall usability