At this level, your program will have some basic classes with specifications as below. You may need

to define methods wherever appropriate to support these classes. At the end of the PASS level, your

program should be able to run with a menu described in the class Operations.

Customers:

$1.$ Class Customer

Each customer has a unique ID$,$ unique name $($a name will only contain alphabet characters$).$

Each customer also has some reward points. You are required to write the class named

Customer to support the following:

i$.$ Attributes ID$,$ name, and reward

ii$.$ Constructor takes the values of ID$,$ name, and reward as arguments

iii. Appropriate getter methods for the attributes of this class

iv$.$ A method get$\_$reward which should be an empty super method

v$.$ A method get$\_$discount which should be an empty super method

vi$.$ A method update$\_$reward which should be an empty super method

vii. A method display$\_$info which should be an empty super method

$2.$ Class BasicCustomer

All Basic customers have a flat reward rate when making a purchase $($i$.$e$.,$ all Basic customers

have the same reward rate$).$ By default, the flat reward rate is $100\%.$ The class BasicCustomer

should have the following components:

i$.$ An attribute for the reward rate

ii$.$ Constructor takes the appropriate parameters$/$arguments$.$

iii. Appropriate getter methods for the attributes of this class

iv$.$ A method get$\_$reward which takes the total cost and returns the reward. Note, the

reward is always rounded. For example, when the total cost is $14\mathrm{.}8$ and the reward rate

is $100\%,$ then the method will returns the reward which is round$(14\mathrm{.}8$ x $100\%)=15.$

v$.$ A method update$\_$reward which takes a value and increase the attribute reward with

that value.

vi$.$ A method display$\_$info that prints the values of the BasicCustomer attributes.

vii. A method set$\_$reward

$\_$

rate to adjust the reward rate. This method affects all Basic

customers.

$3.$ Class VIPCustomer

A VIP customer not just receives the reward but also gets a discount for the purchase. The

reward rate is the same for all VIP customers and has the default value of $100\%.$ On the other

hand, the discount rate is different among VIP customers. If not specified, the discount rate is

set as $8\%.$

Note that the reward is computed after the discount. For example, with a reward rate of $100\%$

and discount rate of $8\%,$ if a VIP customer makes a purchase with the original total cost of $30$$$,$

then discount will be $30$ x $8\%=2\mathrm{.}4$$$,$ the total cost after the discount is $27\mathrm{.}6$$$,$ and thus, the

reward is round$(27\mathrm{.}6$ x $100\%)=28.$

The class VIPCustomer should have the following components:

i$.$ Appropriate attributes to support the reward rate and discount rate