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Exam 9: Arrays

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Question 21

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Write the statement to declare a procedure-level two-dimensional array named dblRates using the following table of data: $\begin{array} { | l | l | } \hline 5 & 5.75 \\\hline 6 & 6 \\\hline 7 & 6.25 \\\hline 8 & 6.5 \\\hline 9 & 6.75 \\\hline\end{array}$

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Dim dblRates(,)As Do...

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Question 22

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Case 1 - Tony’s Pizza & Pasta The restaurant uses an application to update and display menu items and the related price information. -The intSub variable keeps track of array subscripts and is initialized to 0.The intHighSub variable contains the highest subscript for the strToppings array.Which of the following statements will traverse the strToppings array?

A) Do While intSub >= intHighSub
B) For intHighSub As Integer = 0 To intSub
C) Do While intSub <= intHighSub
D) For intSub As Integer = 1 To intHighSub

E) B) and D)
F) None of the above

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Question 23

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Based on the code below,intScores(2,0) is initialized to ____. Dim intScores(,) As Integer = {{75, 90}, {9, 25}, {23, 56}, {6, 12}}

Write the statements to traverse the strCategory array and display each element's value in the lstCategory control.Use a Do...Loop statement.

The following statement will declare an array.What is the index value for the first element? Dim lakes(5)

Write the statement that assigns the string "Treasurer" to the element located in the third row,second column in the strOfficers array.

An advantage of using the For Each…Next statement to process an array is that your code does not need to keep track of the array subscripts or even know the number of array elements.

Based on the statement below,which of the following If clauses determines whether the intSub variable contains a valid subscript for the array? Dim strColors() As String = {"red","green","blue"}

When an array is sorted in descending order,the first element in the array contains the smallest value and the last element contains the largest value.

Assigning initial values to an array is often referred to as ____.

How do the elements in parallel one-dimensional arrays relate to each other? Provide an example.

If a one-dimensional array contains five elements,its Length property contains the number 5 but its highest subscript is 3.

Based on the code below,intScores(3,0) is initialized to ____. Dim intScores(,) As Integer = {{75, 90}, {9, 25}, {23, 56}, {6, 12}}

Based on the code below,intScores(2,1) is initialized to ____. Dim intScores(,) As Integer = {{75, 90}, {9, 25}, {23, 56}, {6, 12}}

When a run time error occurs,the computer displays an error message and the application ends abruptly.

The following sample of code contains errors. Rewrite the incorrect statements to correct all errors. -Private Sub btnGetHighest_Click(ByVal sender As Object,ByVal e As System.EventArgs)Handles btnGetHighest.Click ' displays the highest prize amount and the ' number of people who won that amount Dim intPrizes(10)As Integer = {50,25,100,25,100, 25,75,50,40,60} Dim intHighSub As Integer = intPrizes.GetHighest() Dim intHighPrize As Integer = intPrizes(0) Dim intWinners As Integer = 1 For intX As Integer = 1 To intHighSub If intPrizes(intX)= intHighPrize Then intWinners *= 1 Else If intPrizes(intX)< intHighPrize Then intHighPrize = intPrizes(intX) intWinners = 1 End If End If Next intX lblHighest.Text = intHighPrize.ToString("C0") lblWinners.Text = intWinners.ToString End Sub

Case 1 - Tony’s Pizza & Pasta The restaurant uses an application to update and display menu items and the related price information. -Which of the following statements declares a class-level one-dimensional array named strToppings that stores the 14 available pizza toppings?

A two-dimensional array resembles a table in that the variables (elements)are in rows and columns.

Write the statement to declare a six-element class-level array named strAnimal,and initialize the array with the following values: dog,cat,mouse,bird,snake,fish.

The statement ____ assigns the string "Paris" to the element located in the first row,second column in the strCities array.