In Exercises 13 through 26, construct functions to carry out the primary task(s) of the...

In Exercises 13 through 26, construct functions to carry out the primary task(s) of the program.

Popcorn Profit The three components for a serving of popcorn at a movie theater are popcorn, butter substitute, and a bucket. Write a program that requests the cost of these three items and the price of the serving as input and then displays the profit. See Fig. 5.7.