Chapter 4: Problem 30

Write one or more $\mathrm{C}++$ statements that assign the correct value to discount, using the logic described here: Assign .20 to discount if dept equals 5 and price is $\$ 100$ or more. Assign .15 to discount if dept is anything else and price is $\$ 100$ or more. Assign .10 to discount if dept equals 5 and price is less than $\$ 100$. Assign .05 to discount if dept is anything else and price is less than $\$ 100$.

Short Answer

Expert verified

Question: Write the C++ statements to determine the discount based on the value of 'dept' and 'price' using the solution provided. Answer: ```cpp if (dept == 5 && price >= 100) { discount = 0.20; } else if (dept == 5 && price < 100) { discount = 0.10; } else if (dept != 5 && price >= 100) { discount = 0.15; } else { discount = 0.05; } ```

Step by step solution

Check if dept equals 5 and price is greater than or equal to 100

To check if dept equals 5 and the price is greater than or equal to 100, we can use an if-else statement with the given condition: ```cpp if (dept == 5 && price >= 100) ```

Assign discount of .20

If the condition in step 1 is true, we can assign a discount of .20: ```cpp discount = 0.20; ```

Check if dept equals 5 and price is less than $100$.

If the condition in step 1 is false, we proceed to check if dept equals 5 and price is less than 100, we can use an else if statement with the given condition: ```cpp else if (dept ==5 && price < 100) ```

Assign discount of .10

If the condition in step 3 is true, we can assign a discount of .10: ```cpp discount = 0.10; ```

Check if dept is anything else and price is greater than or equal to 100.

If the conditions in step 1 and step 3 are false, we proceed to check if dept is not equal to 5 and price is greater than or equal to 100, we can use an else if statement with the given condition: ```cpp else if (dept != 5 && price >= 100) ```

Assign discount of .15

If the condition in step 5 is true, we can assign a discount of .15: ```cpp discount = 0.15; ```

Assign discount of .05 in all other cases

If none of the conditions from step 1 to step 5 are true, we can assign a discount of .05 in the else block: ```cpp else discount = 0.05; ``` The final C++ statements combining all the steps: ```cpp if (dept == 5 && price >= 100) { discount = 0.20; } else if (dept == 5 && price < 100) { discount = 0.10; } else if (dept != 5 && price >= 100) { discount = 0.15; } else { discount = 0.05; } ```

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Short Answer

Step by step solution

Check if dept equals 5 and price is greater than or equal to 100

Assign discount of .20

Check if dept equals 5 and price is less than \(100\).

Assign discount of .10

Check if dept is anything else and price is greater than or equal to 100.

Assign discount of .15

Assign discount of .05 in all other cases

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