3.12 Part 1 Hacks
Problem 1: This problem involves parameters
Qais is writing code to calculate formulas from his math class. He's currently working on a procedure to calculate average speed, based on this formula:
Average speed = Total Time/Total Distance
Highlight which of these is the best procedure for calculating and displaying average speed.
PROCEDURE calcAvgSpeed (distance, time) { DISPLAY (distance/time) }
PROCEDURE calcAvgSpeed (distance) { DISPLAY (distance/time) }
PROCEDURE calcAvgSpeed (distance, time) { DISPLAY (time/distance) }
Problem 2: Procedures with return values
James Hunter is looking through his classmate's program and sees a procedure called heightenEmotions: PROCEDURE heightenEmotions(myEmotion)
{ moreEnergy ← CONCAT(myEmotion, "!!!")
moreVolume ← UPPER(moreEnergy)
RETURN moreVolume }
That procedure manipulates strings using two built-in procedures, CONCAT for concatenating two strings together, and UPPER for converting a string to uppercase.
James Hunter then sees this line of code:
heightenEmotions("im mad")
After that line of code runs, will nothing be displayed?
True
False
- I think 'IM MAD!!!' will display as the upper() function converts lowercase letters to uppercase. The concat() function adds three exclamation marks. Therefore something will be displayed.
Problem 3: Procedures with return values
Bubz is writing a program to calculate the carbon footprint of his activities. The procedure calcFlightFootprint calculates the pounds of carbon dioxide produced per passenger in a flight that covers a given number of miles and seats a given number of passengers.
PROCEDURE calcFlightFootprint(numMiles, numPassengers) { CO2_PER_MILE ← 53.29
carbonPerFlight ← numMiles * CO2_PER_MILE
carbonPerPassenger ← carbonPerFlight / numPassengers
RETURN carbonPerPassenger
}
Bubz wants to use that procedure to calculate the total footprint for his two upcoming flights: LA to NY: 2,451 miles and 118 passengers NY to London: 3,442 miles and 252 passengers
Which of these code snippets successfully calculates and stores her total footprint? Highlight 2 answers.
totalFootprint ← calcFlightFootprint(2451, 118) + calcFlightFootprint(3442, 252)
totalFootprint ← calcFlightFootprint(2451, 118 + 3442, 252)
totalFootprint ← calcFlightFootprint((2451, 118) + (3442, 252))
laNyCarbon ← calcFlightFootprint(2451, 118) nyLondonCarbon ← calcFlightFootprint(3442, 252) totalFootprint ← laNyCarbon + nyLondonCarbon
3.12 Homework/Hacks part 2
- PROCEDURE find a ()
{ c -- 9
b <-- 9 * 9
a <-- b * c
Print (a)
}
- What is a?
a = 729
- cost ⟵ 173 tax - 10%
PROCEDURE applytax (cost, cpercentDiscounted) { temp <-- 100 + percentTaxed
temp <-- temp / 100
cost <-- cost x temp
Print(cost)}
- What is the cost?
$190.30
- Temperature - 103 Degrees
PROCEDURE convet Fahrenheit (tempature)
{
Celsius <-- tempature - 32
Celsius <-- Celsius x 5/9
Print (Celsius)}
Answer = 39.444
def replaceRByards(toprbyardspg, currentrbyards, totalGames):
if ((toprbyardspg/totalGames) < (currentrbyards/totalGames)):
toprbyardspg = currentrbyards
print(toprbyardspg)
replaceRByards(100, 1260, 12)
PROCEDURE getAplus(){ If (can_MoveForward): Move_Forward Else (can_MoveRight): Rotate_Right Move_Forward If (can_MoveLeft); Rotate_Left Move_forward }
3. Which Is the Correct Way to define the Name of a Procedure?
A. PROCEDURE MYLIST
B. PROCEDURE MyList
- Procedure should be in all caps and the name shall also be capitalized. Both should be able to work but Answer A is similar to what is seen on College Board.
C. procedure mylist
4 Write A Procedure That gets the BeachBall To the Green Square
PROCEDURE BallToGreen{
Rotate_Left
Move_Forward
Rotate_Right
Move_Forward( until count = 6)
break
Rotate_Left
Move_Forward (until count=2)
break
}