Chapter 20, Problem 2ICA

Write a function named CountDown that accepts a total time T in seconds and displays the time remaining after half of the previously displayed time has elapsed as described below. The function should also accept an integer Steps as also described below.

The function should immediately display the value of T, and then wait T/2 seconds before displaying T/2. It should then wait T/4 seconds and display T/4, etc. This should continue until only 1/2^Steps of the original time remains, at which point it waits for this remaining time, displays a zero, and emits an audio tone.

It is suggested that you look up the pause function and the beep function.

Example: CountDown (60, 6) displays the following by an audio tone.

60	Displayed immediately
30	Displayed 30 seconds later
15	Displayed 15 seconds later
7.5000	Displayed 7.5 seconds later
3.7500	etc.
1.8750	etc.
0.9375	etc.
0	Displayed 0.9375 seconds later accompanied by a beep