[Solved] Why does the following code cause an error?order = Order()order.totalPrice = cart.totalPriceorder.checkout()Assuming totalPrice is a method in Cart. | LLD

LLD - Design — Online Shopping Cart

Why does the following code cause an error?

order = Order()
order.totalPrice = cart.totalPrice
order.checkout()

Assuming totalPrice is a method in Cart.

Acheckout method must be called before setting totalPrice

BOrder class cannot access Cart properties directly

CtotalPrice is a private attribute and cannot be accessed

DtotalPrice should be called as a method with parentheses

Step-by-Step Solution

Solution:

Step 1: Identify totalPrice usage
totalPrice is a method, so it must be called with parentheses to get the value.
Step 2: Explain error cause
Assigning method reference instead of calling it causes an error or unexpected behavior.
Final Answer:
totalPrice should be called as a method with parentheses -> Option D
Quick Check:
Method call needs parentheses [OK]

Quick Trick: Call methods with () to get return value [OK]

Common Mistakes:

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