CSC105 Intro to Programming

Question 1

The following statement will evaluate to True:

5 > 6) OR (12 < 14

Answer 1

True

Question 2

The following statement will evaluate to True:

5 > 6) AND (12 < 14

Answer 2

False

Question 3

Which of the following operators is used in most languages to test if two operands do not have the exact same value?

Answer 3

!=

Question 4

In a Python program, if the variable value1 is set to 2.0 and and variable value2 is set to 12, what is the output of the following command?

           print(value1 * value2)

Answer 4

24.0

Question 5

Which of the choices is equivalent to the following decision?
if x > 10 then

    if y > 10 then
            output "X"

   endif endif

Answer 5

if x > 10 AND y > 10 then output “X” endif

Question 6

Which of the following must always be false?

Answer 6

e > 10 AND e < 7

Question 7

In the following pseudocode, what percentage raise will an employee in department 8 receive?

if department < 5 then

               raise = SMALL_RAISE
else if department < 14 then
               raise = MEDIUM_RAISE
else if department < 9 then
               raise = BIG_RAISE

Answer 7

MEDIUM_RAISE

Question 8

If sales = 100, rate = 0.10, and expenses = 50, which of the following expressions is true?

Answer 8

sales >50 AND expenses <=100

Question 9

Which of the following is the correct “if” clause to determine whether y is in the range 10 through 50?

Answer 9

if y >= 10 and y <= 50

Question 10

Given the following function definition, what would the statements display?

def magic(num):
          return num + 2 * 10

result = magic(5)

print(result)

Answer 10

25

Question 11

What is the result of the following Boolean expression, if x equals 5, y equals 3, and z equals 8?

    x < y or z > x

Answer 11

True

Question 12

What is the result of the following Boolean expression, if x equals 5, y equals 3, and z equals 8?

not (x < y or z > x) and y < z

Answer 12

False

Question 13

Design pseudocode for a module named timesTen. The module should accept an integer argument. When the module is called, it should display the product of its argument multiplied by 10.

After you write the module, call the module passing a 20 to it.

Answer 13

Your Answer:
Module timesTen(integerValue)

Declare integerResult

Set integerResult = integerValue * 10

Display result

End Module

result = 200

COMMENT: Need to call your module with an argument of 20

Question 14

Design pseudocode for a module named getNumber, which uses a reference parameter variable to accept an Integer argument. The module should prompt the user to enter a number and then store the input in the reference parameter variable.

After you write the module, call the module.

Answer 14

Your Answer:
Module getNumber(Real Ref integerValue)

Display “Enter a number: “

Input number

End Module

Module main

Call getNumber

End Module

COMMENT: Need to include argument in your getNumber call

Question 15

What will the following pseudocode program display?

Module main()
  Declare Integer x = 1
  Declare Real y = 3.4
  Display x, " ", y
  Call doSomething(x, y)
  Display x, " ", y
End Module
Module doSomething(Integer a, Real b)
  Set a = 0
  Set b = 0
  Display a, " ", b
End Module

Answer 15

Your Answer:
Nothing; there is nothing within the quotation marks of the Displays

COMMENT: Actually, we are concatenating three things. The value in x, “ “ (which is a blank space), and the value in y. This will result in 1 3.4 for the two displays in the Main module, and 0 0 in the doSomething module.

Question 16

Design pseudocode for an If-Then-Else statement that assigns 0 to the variable b if the variable a is less than 10.

Otherwise, it should assign 99 to the variable b.

Answer 16

Your Answer:
If a < 10 Then:

b = 0

else b = 99

End If

Question 17

Write Python code that asks the user for a product name, the cost of the product and the quantity of the product purchased. Display the product name and the total cost of the purchase.

You do not have to create a function or call a function for this problem.

Answer 17

Your Answer:
def productName():

productName = float(input(‘Enter the name of the product: ‘))

return productName

def productCost():

productCost = float(input(‘Enter the cost of the product: ‘))

return productCost

def productQuantity():

productQuantity = float(input(‘Enter the quantity of the product: ‘))

return productQuantity

def totalCost(productName, productQuantity, productCost):

totalCost = productQuantity * productCost

print(‘The name of the product is: )productName

print(‘The total cost of the product is ‘)totalCost

COMMENT: These functions will work, but you also need a main module that will call them in the order you need.

Question 18

Write Python code that has a function called “doubleMe”. The function requires that an integer value is passed to it when called. The function should double the integer value and return the result.

Write an additional Python statement that calls function “doubleMe” and passes it a 10. The result returned from the function should be stored in a variable called “answer”.

Answer 18

Your Answer:
def main():

integerAnswer = integerValue

def doubleMe():

doubleMe = integerValue * 2

integerValue = float(input(‘Enter the number: ‘))

input number

print(“The answer is: “)integerAnswer

end main()

COMMENT: main() never calls doubleMe therefore this script does nothing since we haven’t set values for integerValue or called any other modules.

Question 19

Write Python code that tests the integer variable called “month”. Based on the value, display the month name. Valid values are: 1 (display January), 2 (display February), and 3 (display March) . Use if/elif statements, not all if statements.

You do not have to create a function or call a function for this problem.

Answer 19

Your Answer:
def month():

if month = 1:

print(“The month is January”)

elif month = 2:

print(“The month is February”)

elif month = 3

print(“The month is March”)

end if

Question 20

Write Python code that displays “Speed is OK” if the variable “speed” is within the range 24 to 56.

If “speed” holds a value outside the range, display “Speed is abnormal”.

You do not have to create a function or call a function for this problem.

Answer 20

Your Answer:
def speed():

if speed >= 24 AND speed <= 56

print(“Speed is OK”)

elif speed < 24 OR speed > 56

print(“Speed is abnormal”)

end if

Question 21

Which of the following is the structure that causes a statement or set of statements to execute repeatedly?

Answer 21

Repetition

Question 22

Which type of loop uses a Boolean expression to control the number of times a loop repeats?

Answer 22

condition-controlled

Question 23

Statements that appear between the While and End While statements are known as the __________.

Answer 23

loop body

Question 24

A __________ represents a special value that marks the end of a list of values.

Answer 24

sentinel

Question 25

If an expression is False, the __________ operator will return True.

Answer 25

NOT

Question 26

How many times would the following loop iterate?

For j = 1 To 5 Step 2

 Display j

End For

Answer 26

3

Question 27

How many times would the following loop iterate?

Set k = 1

While k <= 5

 Display k

End While

Answer 27

Infinite

Question 28

How many times would the following loop iterate?

Set k = 1

While k > 5

 Display k

End While

Answer 28

0

Question 29

How many times would the following loop iterate?

For m = 1 To 8 Step 3

 Display m

End For

Answer 29

3

Question 30

The amount by which the counter variable is incremented or decremented in a For loop is known as the __________.

Answer 30

step amount

Question 31

In the following pseudocode counter is the accumulator.

For counter = 1 to 6

 Set numberWidgets = numberWidgets + counter

End For

Answer 31

False

Question 32

While and For loops are considered pretest loops because they test the condition before processing the statement or statements in the loop body.

Answer 32

True

Question 33

The test condition in a While loop must always be an integer value.

Answer 33

False

Question 34

The following pseudocode is for a loop that will perform three iterations.

For start = 5 To 10 Step 2

 Do something

End For

Answer 34

True

Question 35

A While loop repeats infinitely when there is no statement inside the loop body that will make the test condition false.

Answer 35

True

Question 36

A function __________ specifies the return data type, name of the function, and the parameter variable(s).

Answer 36

header

Question 37

A __________ is a module that returns a value back to the part of the program that called it.

Answer 37

function

Question 38

What is the data type of the value returned by the random function?

Answer 38

Integer

Question 39

What would display if the following pseudocode was coded and executed?

Declare String user = “Martha and George”

Declare Integer number

Set number = length(user)

Display number

Answer 39

17

Question 40

A function is a special type of __________.

Answer 40

module

Question 41

Select all that apply. Which of the following is(are) required when writing a function definition?

Answer 41

the function body
the return statement
the function header
the data type

Question 42

Select all that apply. Which of the statement(s) would be true if the following pseudocode was coded and executed?

Declare Integer needNumber

Set needNumber = random(5, 10)

Answer 42

A random number is generated between 5 and 10.

The numbers 5 and 10 are the arguments of the random number function.

Question 43

Library functions are built into a programming language and can be called whenever they are needed.

Answer 43

True

Question 44

Random numbers are useful in simulation programs where the computer must randomly decide how an object will behave.

Answer 44

True

Question 45

When a function finishes executing, it returns a value back to the part of the program that called it.

Answer 45

True

Question 46

What would display if the following pseudocode is coded and executed?

Declare String str1 = “car”

Declare String str2 = “green”

Set message = append(str1, str2)

Display “You have a “ , message

Answer 46

You have a cargreen

Question 47

What would display if the following pseudocode was coded and executed?

Declare String user = “Joey”

If isInteger(user) Then

 Set intUser = stringToInteger(user)

 Display intUser

Else

 Display "Not a valid number"

Answer 47

Not a valid number

Question 48

What would display if the following pseudocode was coded and executed?

Declare String user = “Martha and George”

Display substring(user, 1, 3)

Answer 48

art

Question 49

The __________ function does the same thing as using the mathematical ^ operator.

Answer 49

pow

Question 50

What is the value of r after the following statement is coded and executed?

Declare Integer i = 12

Declare Real r

Set r = toReal(i)

Answer 50

12.0

Question 51

An individual element in an array is identified by its __________.

Answer 51

subscript

Question 52

A type of loop that exists in some programming languages specifically for stepping through an array and retrieving the value of each element is known as a __________ loop.

Answer 52

For Each

Question 53

__________ arrays are two or more arrays that hold related data where each element of one array has the same subscript as a corresponding element in the other arrays.

Answer 53

Parallel

Question 54

Every element in an array is assigned a unique number known as a(n) __________.

Answer 54

subscript

Question 55

What is the term used for the number inside the brackets of an array that specifies how many values the array can hold?

Answer 55

Size declarator

Question 56

When working with arrays most programming languages perform __________ to ensure that programs don’t use invalid subscripts.

Answer 56

array bounds checking

Question 57

What type of error occurs when a loop through an array iterates one time too few or one time too many?

Answer 57

off-by-one error

Question 58

In the following declaration, what is the data type of the elements in the array?

Declare Integer numbers[SIZE]

Answer 58

Integer

Question 59

Which of the following statements is true about this array declaration?

Declare Integer numbers[5] = 123,456,789,321,654

Answer 59

This is an array declaration and initialization

Question 60

Given the following statement, what is the subscript for the data value 92?

Declare Integer numbers[5] = 83,92,78,94,61

Answer 60

1

Question 61

Which of the following array declarations would be best suited for storing prices of items sold in a store?

Answer 61

Declare Real itemPrice[SIZE]

Question 62

What would display if following statements are coded and executed?

Declare Integer scores[3]= 76, 94, 83

Declare String names[3] = “Joe”, “Amy”, “Pat”

Display names[1], scores[2]

Answer 62

Amy 83

Question 63

Which is the correct way to pass an array named studentScores that holds 25 values to a function named getAverage and save the result to a variable named average?

Answer 63

Set average = getAverage(studentScores, 25)

Question 64

The number of elements in an array is the value of the subscript of the last element in that array.

Answer 64

False

Question 65

To calculate the total of the values in an array, a loop is used with an accumulator variable.

Answer 65

True