Medium

OOP Lab 01: Product Class & Discount System

Problem Objective

Implement a Product class with private attributes productID (int), price (double), and discount (double percentage).

Provide constructor overloading: one constructor taking only (int id, double price) (defaulting discount to 0.0), and another taking (int id, double price, double discount).

Implement a copy constructor Product(const Product& other) that duplicates product state.

Implement applyDiscount() which calculates the discount and updates the price, ensuring the final price never drops below 0.

Implement getFinalPrice() const returning the current price, and display() const showing product details.

In main(), instantiate products using both constructors, copy a product, apply discounts, and display results before and after.

Expected Terminal OutputStandard Out

[Initial p1] Product ID: 100 | Price: $50.00 | Discount: 0%
[Initial p2] Product ID: 101 | Price: $100.00 | Discount: 20%
[After Discount p2] Product ID: 101 | Price: $80.00 | Discount: 20%
[Copied p3] Product ID: 101 | Price: $80.00 | Discount: 20%

[✓] Product class & copy constructor verified (Time: 0.008s, Memory: 2.1 MB)

Execution Constraints

›Private member variables for productID, price, discount
›Explicit copy constructor Product(const Product& other)
›Price after discount must never be negative (clamped at 0.0)
›Const getter methods

Implementation Checklist

Define Product class with private attributesImplement overloaded constructors and copy constructorImplement applyDiscount() with negative price protectionImplement getFinalPrice() and display()Test creation, copy constructor, and discount application in main()

main.cppg++ -std=c++20 -O2

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BYTESLABVirtual Laboratory

BYTESLAB/C++/OOP/LAB-20