What if the quantity is zero?

If the quantity is zero, the total cost will also be zero, as multiplying any number by zero results in zero. Here's how the code behaves:

Example Code with Zero Quantity

price = 10.00  # Price of one book
quantity = 0   # Quantity set to zero
total_cost = price * quantity
print(f"The total cost for {quantity} books is ${total_cost:.2f}.")

Output

This will output:

The total cost for 0 books is $0.00.

Explanation

• Since quantity is zero, total_cost will be calculated as 10.00 * 0, resulting in 0.00.
• The formatted string will display the total cost as $0.00.

This behavior is consistent and expected in arithmetic operations. If you have further questions or need more examples, feel free to ask!