Procedure$/$flow $($You do not need to follow the exact steps$)$

$1.$ Create a double variable to hold the total money.

$2.$ Write a loop to:

a$)$ Prompt the user to select a product

b$)$ Use an IF$/$ELSE$-$IF$/$ELSE$-$IF$/$ELSE to check which product is selected.

i$.$ Prompt the user to enter the quantity for the selected product.

ii$.$ Now you know which product is selected $($also means that you know the unit price$)$

and the quantity, you can add it to the total money.

iii. The ELSE is for invalid user input $$ send a warning.

c$)$ The user may select multiple products $$ ask the user if that is all for today.

i$.$ Take user input and check if the loop should continue.

ii$.$ Break the loop if the user indicates that is all for today.

$3.$ Output the total money the user needs to pay.

Task $$ A Vending Machine