Which of the following is the correct syntax to add a product to a cart in an object-oriented design?

easy📝 Conceptual Q3 of 15

LLD - Design — Online Shopping Cart

Acart.addProduct(product, quantity);

Bproduct.addToCart(cart, quantity);

Ccart.productAdd(product, quantity);

DaddProduct(cart, product, quantity);

Step-by-Step Solution

Solution:

Step 1: Understand method ownership
Adding a product to a cart should be a Cart class method, as it manages products.
Step 2: Identify correct method call syntax
Method name should be clear and follow common naming conventions like addProduct.
Final Answer:
cart.addProduct(product, quantity); is correct syntax -> Option A
Quick Check:
Method call = cart.addProduct(...) [OK]

Quick Trick: Cart manages products, so call addProduct on cart object [OK]

Common Mistakes:

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