C# inheritance workshop requirements

CANDYSHOP.md

C# Candy Shop Workshop - Requirements Document

Project Overview

Build a console application for a candy shop that demonstrates object-oriented programming concepts through inheritance and composition patterns.

Business Requirements

Candy Inventory System

• The shop sells different types of candy: chocolates, gummies, and hard candies
• Each candy has basic information: name, price, and sweetness level
• Each candy type has unique characteristics that need to be tracked
• The system must display candy information in a user-friendly format

Shop Organization System

• Display Cases: Used to organize inventory by candy type
• Each display case contains only one kind of candy (all chocolates, all gummies, etc.)
• Display cases show what type of candy they contain and how many items are in stock
• Staff should be able to add candy to the appropriate display case

Customer Purchase System

• Party Baskets: Used for customer orders and gift combinations
• Party baskets can contain any mix of candy types
• Customers should be able to add any candy to their basket
• The system should calculate total prices and show basket contents

Technical Learning Objectives

1. Inheritance Implementation

• Create a base candy class with common properties and behaviors
• Implement specialized candy types that extend the base class
• Demonstrate code reuse and polymorphism through inheritance
• Use virtual methods and method overriding appropriately

2. Composition Patterns

• Flexible Composition: Implement containers that can hold multiple object types
• Constrained Composition: Implement containers restricted to single object types
• Compare and contrast when to use each approach
• Demonstrate object relationships using "has-a" vs "is-a" concepts

3. Object-Oriented Design

• Apply encapsulation principles with appropriate access modifiers
• Design class relationships that model real-world scenarios
• Create maintainable and extensible code structures
• Demonstrate polymorphic behavior in collections

Success Criteria

For Inheritance:

• All candy types share common functionality from base class
• Each candy type displays its unique information correctly
• Polymorphism works when treating different candies uniformly

For Composition:

• Display cases enforce business rules (single candy type only)
• Party baskets allow flexible combinations
• Both container types manage their contents appropriately

For Application:

• Console app demonstrates all classes working together
• User can see the difference between organized inventory and mixed collections
• Code is readable, well-structured, and demonstrates OOP principles