Coding ExercisesImplement an ordering system for a fast$-$food restaurant. Write a function to display a menu to the user $($burgers$,$ fries, coke, and checkout$).$ Write a function to obtain the quantity of an item to order. The function should accept the name of the item $("$burgers$",$ "fries", "coke"$)$ as a parameter and return the quantity ordered. The function should get the quantity as input from the user and validate that it's a non$-$negative integer. Write a function to display a receipt. The function should accept the total cost as a parameter. Write a main function that repeatedly displays the menu to the user and allows them to order items. Upon checkout, calculates the totals and displays a receipt. Prices: burger $$5\mathrm{.}50,$ fries $$3\mathrm{.}50,$ coke $$2\mathrm{.}00.$ Apply a $3\%$ tax to the cost of all the items.