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Event Driven Programming

person’s THR can be calculated from his age and resting heart rate (pulse when first
awakening) as follows:
(a) Calculate the maximum heart rate as 220 age.

(b) Subtract the resting heart rate from the maximum heart rate.
(c) Multiply the result in step (b) by 60%, and then add the resting heart rate.
Write a program to request a person’s age and resting heart rate as input and display
their THR. (Test the program with an age of 20 and a resting heart rate of 70, and then
determine your training heart rate.)
5. The three ingredients 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. (Test the program where
popcorn costs 5 cents, butter substitute costs 2 cents, the bucket costs 25 cents, and the selling
price is $5.)

6. Rewrite the population-density program from Example 4 of Section 4.1 using a function to
calculate the population density.
7. The original cost of airmail letters was 5 cents for the first ounce and 10 cents for each
additional ounce. Write a program to compute the cost of a letter whose weight is given
by the user in a text box. Use a function called Ceil that rounds noninteger numbers up
to the next integer. The function Ceil can be defined by Ceil(x) = Int(x).(Test the program
with the weights 4, 1, 2.5, and .5 ounces.)

8. Suppose a fixed amount of money is deposited at the beginning of each month into a
savings account paying 6% interest compounded monthly. After each deposit is made, [new
balance] = 1.005 * [previous balance one month ago] + [fixed amount]. Write a program
that requests the fixed amount of the deposits as input and displays the balance after each
of the first four deposits. A sample outcome when 800 is typed into the text box for the
amount deposited each month follows.
Month 1 800.00

Month 2 1,604.00
Month 3 2,412.02
Month 4 3,224.08

9. Write a program to request the name of a United States senator as input and display the
address and greeting for a letter to the senator. Assume the name has two parts, and use
a function to determine the senator’s last name. A sample outcome when Robert Smith is
typed into the input dialog box requesting the senator’s name follows.
The Honorable Robert Smith
United States Senate

Washington, DC 20001
Dear Senator Smith,
10. Difference between Class Module and Standard Module.

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