3.12 Homework Part 1

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

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 Part 2

(1)

PROCEDURE find a ()
{ 
c <-- 9
b <-- 9 * 9
a <-- b * c
Print (a)
}

What is a?

c = 9
b = 9 * 9 = 81
a = b c = 81 9 = 729

a=729

(2)

cost <-- 173 tax - 10%
PROCEDURE applytax (cost, cpercentDiscounted) { 
temp <-- 100 + percentTaxed
temp <-- temp / 100
cost <-- cost x temp
Print(cost)}

What is the cost?

temp = 110
110/100 = 1.1
173 * 1.1 = $190.30

$190.30

(3)

Tempature - 103 Degrees
PROCEDURE convet Fahrenheit (tempature)
{
Celsius <-- tempature - 32
Celsius <-- Celsius x 5/9
Print (Celsius)}
103 - 32 = 71
71 x (5/9) = 39.44 degrees Celsius
}

39.44 degrees Celsius

3.13 Hacks

(1)

Create a procedure that is meant to replace the top running backs yards per game in one season if the current running back has more yards per game Necessary Parameters: toprbyardspg(100), currentrbyards(1260), totalGames(12)

def replaceRrunningBackYards(toprbyardspg, currentrbyards, totalGames):
    if ((toprbyardspg/totalGames) < (currentrbyards/totalGames)):
        toprbyardspg = currentrbyards
    print(toprbyardspg)
replaceRrunningBackYards(100, 1260, 12)

1260

(2)

Write a procedure that will allow the A+ to get to the 1, while avoiding the black boxes.

PROCEDURE APlus(){
If (canMoveForward):
Move_Forward
Else (canMoveRight):
Rotate_Right
Move_Forward
If (canMoveLeft);
Rotate_Left
Move_forward
}

(3)

Which Is the Correct Way to define the Name of a Procedure?

  • A. PROCEDURE MYLIST
  • B. PROCEDURE MyList
  • C. procedure mylist Since the procedure should be in all capital and part of the procedure name should be capitalized

(4)

Write A Procedure That gets the BeachBall To the Green Square

PROCEDURE toGreenSquare {
Rotate_Left
    move_forward
    move_forward
    move_forward
    move_forward
    move_forward
    move_forward
    rotate_left
    rotate_left
    rotate_left
}