Quiz8-Arrays Flashcards
Subscripts are used to identify specific elements in an array.(T/F)
True
Unlike variables, arrays need to be initialized separately from the declaration. (T/F)
False
Array bounds checking happens at runtime. (T/F)
True
The first step when calculating the average of all values in an array is to get the sum of all the values. (T/F)
True
If an array, names, consists of a list of usernames, then names[1] holds the value of the first username in the list. (T/F)
False
Each element in a two-dimensional array has two subscripts. (T/F)
True
To calculate the total of the values in an array. a loop is used with an accumulator variable. (T/F)
True
An array, like a variable, can hold only one value. (T/F)
False
It is usually much easier to process a large number of items in an array than to process a large number of items that are stored in separate variables. (T/F)
True
The number of elements in an array is the value of the subscript of the last element in that array. (T/F)
False
One drawback to the sequential search is that it cannot be used with an array that contains string elements. (T/F)
False
The term “parallel array” is a synonym for a two-dimensional array. (T/F)
False
An individual element in an array is identified by its ____________.
subscript
A type of loop that exists in some programming languages specifically for stepping through an array and retreiving the value of each element is known as a ___________ loop.
A) Step
B) For Each
C) While Each
B) For Each
____________ arrays are two or more arrays that hold related date where each element of one array has the same subscript as a corresponding element in the other arrays.
parallel arrays
Two-dimensional arrays can be thought of as containing ___________.
rows and columns
Every element in an array is assigned a unique number known as a(n) ______________.
subscript
What is the term used for the number inside the brackets of an array that specifies how many values the array can hold?
size declarator
When working with arrays, most programming languages perform ______________ to ensure that programs don’t use invalid subscripts.
array bounds checking
What type of error occurs when a loop through an array iterates one time too few or one time too many?
A) runtime error
B) off-by-one error
C) validation error
B) off-by-one error
How many subscripts do you need to access one element in a two-dimensional array?
Two
In the following declaration, what is the data type of the elements in the array?
Declare Integer numbers[SIZE]
Integer
Which of the following statements is true about this array declaration??
Declare Integer numbers[5] = 123,456,789,321,654
A) This is an error; there should be 6 integers in the array
B) This is an array declaration and initialization
C) None of these statements are true
B) This is an array declaration and initialization
Given the following statement, what is the subscript for the data value 92?
Declare Integer numbers[5] = 83,92,78,94,61
1 is the subscript
Which of the following array declarations would be best suited for storing prices of items sold in a store?
A) Declare Integer itemPrice[SIZE]
B) Declare Real itemPrice[SIZE]
C) Declare String itemPrice[SIZE]
B) Declare Real itemPrice[SIZE]
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]
Display “Your test score is: “
Display scores[2]
A) Joe Your test score is: 94
B) Amy your test score is: 94
C) Amy your test score is: 83
C) Amy your test score is: 83
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?
A) Set average=getAverage (studentScores, 25)
B) Set getAverage = average(studentScores[25])
C) Set average = getAverage(studentScores)
A) Set average = getAverage(studentScores,25)
Given the following array declaration, what value is stored in testScores[2][0]
Declare Integer testScores[3][3]=
66, 77, 88
98, 87, 76
65, 74, 89
65
