#4CPT 232—C++ PROGRAMMING I Program #4 Due Date: _________________ PROGRAM DESCRIPTION Those pesky town officials are tough to please! And that means the design for Summerville SeaWorld™ is gonna take longer than expected. The town council is still a bit cranky over our plan to use so much water in a commercial enterprise. (Haven’t they heard of Lakes Marion and Moultrie?!) So, the principal feature of the park, the proposed porpoise pond (just had to say that for a bit of alliteration), is about to undergo some redesigning. Now, we will be informed as to the maximum amount of water we can use in the tank, after a possibly touchy town discussion scheduled at the next fortnightly meeting. (Wonder how often that really is? ) But we can’t afford to wait around without lining up some contractors to start making preparations for the tank’s support. So, what’s needed now is for you to revise the program you wrote and take the tank’s size in gallons as input, then plan the rest around that. The program will surely be done long before we have the final word, but we can use the program as an estimator for various options, cost figures, etc. SPECIFIC DIRECTIONS This time, your program must have an introduction that explains to the user how the program works and how to respond to your prompts—for example, what units of measure to use. But now you will be planning “backwards” from the original calculations. Ask for the user’s name—that’s always a good thing to do—and then ask for the volume of water for the tank ingallons. Once you have that, you are ready to convert it to an appropriate cubic measure. As before, assume we will fill the tank to the 11-foot level. Now, you can use the cylinder formula “in reverse” and calculate the radius of the proposed porpoise pond. (Sorry, that’s the last time I’ll do that!) Remember that the surrounding dome is going to have a diameter three times the diameter of the pond, so you can calculate that easily. And as before, you will need to calculate the areas of the two circles, the pond and the dome, in order to figure out the area under each one. Next, there are a couple of important decisions to make. We have been speculating about changing the kind of seats for the “splashees”, our paying customers. The original type of seat we thought about using, the 5.5 square foot seat, is similar to an upright wooden deck chair, and we’ve been getting nervous glances from our insurance team who think some customers might bolt from the waves of water coming at them and trip over flailing chairs. Maybe we need to rethink that. So, we are also considering a bolted down, plastic chair that takes up a bit less room, meaning more chairs could be installed in the same space. Seating more customers would be a good thing! As a new part of your program, you will ask for a decision on the seat type. One other decision: we currently have quotes from five contractors to build the super-reinforced concrete ...

1. #4CPT 232—C++ PROGRAMMING I
Program #4
Due Date: _________________
PROGRAM DESCRIPTION
Those pesky town officials are tough to please! And that means
the design for Summerville SeaWorld™ is gonna take longer
than expected. The town council is still a bit cranky over our
plan to use so much water in a commercial enterprise. (Haven’t
they heard of Lakes Marion and Moultrie?!) So, the principal
feature of the park, the proposed porpoise pond (just had to say
that for a bit of alliteration), is about to undergo some
redesigning. Now, we will be informed as to the maximum
amount of water we can use in the tank, after a possibly touchy
town discussion scheduled at the next fortnightly meeting.
(Wonder how often that really is? )
But we can’t afford to wait around without lining up some
contractors to start making preparations for the tank’s support.
So, what’s needed now is for you to revise the program you
wrote and take the tank’s size in gallons as input, then plan the
rest around that. The program will surely be done long before
we have the final word, but we can use the program as an
estimator for various options, cost figures, etc.
SPECIFIC DIRECTIONS
This time, your program must have an introduction that explains

2. to the user how the program works and how to respond to your
prompts—for example, what units of measure to use. But now
you will be planning “backwards” from the original
calculations. Ask for the user’s name—that’s always a good
thing to do—and then ask for the volume of water for the tank
ingallons. Once you have that, you are ready to convert it to an
appropriate cubic measure. As before, assume we will fill the
tank to the 11-foot level. Now, you can use the cylinder
formula “in reverse” and calculate the radius of the proposed
porpoise pond. (Sorry, that’s the last time I’ll do that!)
Remember that the surrounding dome is going to have a
diameter three times the diameter of the pond, so you can
calculate that easily. And as before, you will need to calculate
the areas of the two circles, the pond and the dome, in order to
figure out the area under each one.
Next, there are a couple of important decisions to make. We
have been speculating about changing the kind of seats for the
“splashees”, our paying customers. The original type of seat we
thought about using, the 5.5 square foot seat, is similar to an
upright wooden deck chair, and we’ve been getting nervous
glances from our insurance team who think some customers
might bolt from the waves of water coming at them and trip
over flailing chairs. Maybe we need to rethink that. So, we are
also considering a bolted down, plastic chair that takes up a bit
less room, meaning more chairs could be installed in the same
space. Seating more customers would be a good thing! As a
new part of your program, you will ask for a decision on the
seat type.
One other decision: we currently have quotes from five
contractors to build the super-reinforced concrete support under
the pond. So, you will present the quotes and ask for the final
decision on that contractor. (For now, we won’t worry about
deciding on the contractor for the concrete base under the

3. seating area.)
Seat calculation. Remember that the seats can take up only one-
half of the area under the dome and around the pond. (And of
course remember that the pond area depends on the number of
gallons inputted by the user.) Calculate and display to the user
how many seats of each type will fit in the calculated area. For
the wooden deck chairs, use the previous figure of 5.5 square
feet per seat. For the fixed, bolted down plastic seats, use a
figure of 4.8 square feet. After you have displayed the two seat
numbers, ask the user which seat will be selected. Don’t ask
them to input the number of seats or to type in a name like
“wood”: give them a simple choice like 1 or 2 or a single letter
to input for their choice. Once you have their choice, you can
go about finalizing how many seats to install.
Base for the pond. There are currently five contractors who
wish to bid on installing the concrete support under the pond,
and each of them has provided a dollar cost per square foot of
laying the super-reinforced concrete. What you need to do is to
display a summary table of these costs. This is what the bid
table needs to look like:
BID TABLE
BID
CONTRACTOR ID
BID AMOUNT ($ PRICE PER SQ FT)
TOTAL BID FOR JOB
1
11237
37.75
[computed value]
2
10979
38.95

4. “
3
21352
44.99
“
4
22976
45.35
“
5
33209
22.85
“
The contractor ID numbers and their bid cost per square foot are
data we got from each of the contractors. What you need to do
is compute the total bid amount for each one and list that in the
fourth column for each of the five contractors. After displaying
the table, ask the user to select their choice of contractor. (Do
not ask the user to input the contractor’s ID number or the bid
amount: you must accept only the line or bid number: 1…5.
That makes for user-friendly software!) After the user makes a
selection, you can determine the appropriate cost per sq ft and
the total cost of the concrete support.
After you’ve computed all the information, display it to the
user. Be sure to display all of the following in your final
report: the pond and the dome diameters; the area and cost of
the concrete under the pond; the area under the dome, not
including the pond; the number of seats to be installed; and the
number of gallons of water to fill the pond to the 11 foot level.
(Of course, we inputted that at the beginning.) This information
must be presented to the user as some sort of commercial plan.
Don’t use a bunch of simple sentences with values at the
end…boring! From now on your output will be graded for the
professionalism of the final display. In all of your displays, use

5. two decimals for all dollar figures and one decimal for any
other floating point values. This sort of formatting will be
graded for the remaining programs.
This C++ solution should be Program4
Solution
name. Zip the solution for submitting, as usual.
TURN IN: a data dictionary for this program, a complete
flowchart, and the zipped solution directory. Submit everything
using the Dropbox in D2L.
SOME FORMULAS/CONVERSIONS
Area of a circle: πr2(where r is the circle’s radius)
Volume of a cylinder: πr2h(r is radius; h is the cylinder’s
height)
Volume of a sphere: 4/3πr3(again, r is radius)
Change gallons to cubic feet:multiply gallons (of water) by
0.13368(EG 10 gallons = 1.3368 cubic feet)
FINDING THE SQUARE ROOT
By studying the formulas it should become obvious that you
will need to calculate a square root to determine the radius of
the pond, which is a cylinder. Here’s how. The formula for

6. radius would be the square root of the value of volume divided
by PI times the height. A simple way to get the square root is
to use a function in the cmath library, so you will need to have
this in your “include” area of the program: #include <cmath>
Now, just call the math function “sqrt” for the square root and
place the expression inside parentheses. Suppose that I have
these variables declared: pradius for the pond radius; pvolume
for the volume of the pond water in cubic feet (not gallons!);
and pheight for the height of the pond water (assumed to be 11
feet). Then, the assignment statement to find the radius would
look like this now:
pradius = sqrt (pvolume / (3.14159265 * pheight));
//You could use M_PI from the cmath library! To do that, don’t
forget to also #define _USE_MATH_DEFINES
That’s all there is to it!
EXTRA CREDIT (10 pts):
Ask the user to choose between three different seat contractors.
Right after the user selects the type of seat to install, give them
the following information. Contractor #1 can install the seats
for $39.95 per seat; Contractor #2 will do it for $34.50 per seat;
and Contractor #3 has stated they can do it for $43.95 per seat.

7. (Don’t worry about the two different types of seats—just go
with the one cost figure per contractor.) Tell the user the total
seat installation cost for each of the contractors, and then ask
the user to choose between the 3 contractors. In the final
report, then, display the total cost for installation of all the
seats.
Example run for this program. Let’s say the program starts out
this way:
JONES PROGRAMMING, INC
DESIGN FOR SUMMERVILLE SEAWORLD
May I please have your name first: Dave
OK, Dave, we’ll need some important figures to get the
planning done. Please input things when you are prompted.
Most figures will be simple whole numbers. Please don’t use
any commas in the numbers you input.
First, please input the number of gallons to be used in the
porpoise pond: 200000
OK, if we fill the pond to the 11-foot level with 200,000 gallons
of water, that will make the pond 55.6 feet in diameter. If you
plan to tell the contractor a round number of feet, be sure to tell

8. them a lower number! If you round up, the pond will use too
much water, and that could cause legal troubles!
Now, Dave, let’s decide on what type of seats to buy. The two
options are wooden deck chairs and bolted down plastic seats.
Since the plastic seats are a bit smaller, you can put more of
them in the available space. Here are the two options, showing
how many seats of each type can be installed:
1Wooden seats1767
2Plastic seats2025
Please enter 1 for wooden and 2 for plastic: 2
OK, we will purchase the plastic seats.
Now, Dave, it’s time to decide on which contractor will lay the
concrete under the pond. Here are the five bids:
BID
CONTRACTOR ID
BID AMOUNT ($ COST PER SQ FT)
TOTAL BID FOR JOB
1
11237
37.75

9. $91,753.09
2
10979
38.95
$94,669.75
3
21352
44.99
$109,350.24
4
22976
45.35
$110,225.24
5
33209
22.85
$55,537.96
Which concrete contractor will it be (1, 2, 3, 4, 5): 2
<Clear the screen, so the final report will look professional.>
JONES DATA CONSULTANTS, INC
DESIGN FOR SUMMERVILLE SEAWORLD (V1.0)

10. POND VALUES
---------------------
Diameter:55.6 feet
Area:2430.5 square feet
Concrete cost:$94,669.75
Gallons of water:200,000 (fills to the 11-foot mark)
DOME VALUES
---------------------
Diameter166.9 feet
Area open under dome:19,444.4 square feet
# seats:2025 (to fill half of the available dome area)
Please let us know if you need any further information. It’s
been a pleasure to meet your needs!
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