If your programmer number is odd, you are assigned Task A$.$ Make the following $2$

functions.

Copy mailOrderA.h from my public directory into your cs$111$ directory. Complete the $2$ functions in that file.

$1.$Write a function called calcDiscount that will calculate a discount amount and return it$.$ If price is $100\mathrm{.}00$ and month is

$5(5\%$ discount$),$ this function should return $5\mathrm{.}00.$

If you are returning only one value, what technique should you use? $$return$$ rather than $$pass by reference$$

$/**********************************************************$

pr is the total price of all the items the customer is buying.

mo is the month when the customer is placing an order.

This function calculates a discount amount as follows and returns it$.$

Month ordered Discount on total sale amount $($before tax$)$

Jan $$ May $5\%$

Jun $$ Aug $10\%$

Sep $$ Dec $15\%$

$**********************************************************/$

$?????$ calcDiscount$($double pr$,$ int mo$)//$You may not change these parameters

$\{$

$//$Complete this function in mailOrderA.h that you downloaded from my public directory.

$\}$

Compile your $.$h file.

$[$smith$001$@empress cs$111]$ g$++$ mailOrderA.h

If your $.$h compiles, test calcDiscount before you move onto the next function.

How? $($don$$t add main$()$ in the $.$h file$)$ Make a test $.$cpp called testMailOrder.cpp and create a main function in

this $.$cpp file $($just like you made testMyMath.cpp to test myMath.h$).$ Call only calcDiscount in main and make sure

it returns the right value. You don$$t need to call the other functions when you test calcDiscount. Each function

should be able to run and test independently from the others.

Test calcDiscount function for each category $(5,10$ and $15\%$ discount$).$ Make sure the function returns the correct value.

You could use the following $3$ sets of values.

$1.$ Total price $=100\mathrm{.}55$

Month $=5$ testing $5\%$ discount

$2.$ Total price $=100\mathrm{.}55$

Month $=6$ testing $10\%$ discount

$3.$ Total price $=100\mathrm{.}55$

Month $=9$ testing $15\%$ discount

$//$testMailOrder$.$cpp

Include your header file

int main$()$

$\{$

$//$How do you show what the function returns? You have to add a little more code.

calcDiscount$(100\mathrm{.}55,5)$; $//$ change the month

return $0$;

$\}$

Compile your $.$cpp and run.

$[$smith$001$@empress cs$111]$ g$++$ testMailOrder.cpp