"""
stadium_seating.py
=====
(From Starting Out with Python, Chapter 3, Programming Exercises #8)

8. There are three seating categories at a stadium.  For a softball game,
Class A seats cost $15, Class B seats cost $12, and Class C seats cost $9.
Write a program that asks how many tickets for each class of seats were sold,
and then displays the amount of income generated from ticket sales.

For this exercise:

Example Output - Everything after the greater than sign (>) is user input:

Hi.  Let's see how much money the softball game made!
==========

How many Class A tickets ($15) were sold?
> 10
How many Class B tickets ($12) were sold?
> 10
How many Class C tickets ($9) were sold?
> 10
The total income is: $360!
"""
