$3.$ Write a program for Nos Encanta Tu Inter$$s credit card company that:

a$)$ Allows the user to enter the name, credit card number, beginning balance

and monthly interest rate for one customer at a time, and when they want

to exit, type $$END$$ when prompted for the customer$$s name.

b$)$ For the next full year $(12$ months$),$

$1.$ Outputs the month number and the balance at the beginning of the

month

$2.$ Allows the user to enter the amount of their payment, and the

amount of their purchases for that month

$3.$ Outputs the balance after applying the payment, purchases and

adding interest for that month