$12.$ A restaurant has $3$ items on the menu.

Hamburger $-$ $$3\mathrm{.}50$

HotDog $-$ $$2\mathrm{.}00$

FrenchFries $-$ $$2\mathrm{.}50$

Write a C$++$ program for the restaurant owner that first asks the customer how many items they want. Then, using a while loop, for each item ask which item they want and how many. Then output the screen how much money they owe $($do not add tax$).$