Deck 10: Structures and Sequential Access Files

Question 1

Variables declared using a structure are often referred to as ____.

A) functions
B) Subs
C) structure variables
D) objects

Answer 1

C

Question 2

A file to which information is written is referred to as a(n)____ file.

A) report
B) text
C) output
D) data

Answer 2

C

Question 3

To access a member of a structure variable in an array,you use the syntax ____.

Answer 3

A

Question 4

Files that are read by the computer are called ____ files.

A) storage
B) serial
C) input
D) report

Question 5

You cannot include an array in a structure.

Question 6

Programmers use structure variables to store related items in an array,even when the items have different data types.

Question 7

Most programmers use the Structure statement,rather than the Class statement,to create data types that contain procedures.

Question 8

Data types created using the Structure statement are referred to as user-defined data types or structures.

Question 9

You can use the ____ to open a sequential access file for output.

A) CreateText method
B) StreamReader object
C) StreamWriter object
D) AppendText method

Question 10

You reserve memory locations by declaring a structure variable.

Question 11

Examples of text stored in sequential access files include an employee list,a memo,or a sales report.

Question 12

Files to which information is written are called input files.

Question 13

Programmers refer to a sequence of characters as a ____.

A) string of characters
B) stream of characters
C) file
D) variable

Question 14

The syntax used to declare a StreamWriter variable is ____.

Question 15

When you pass a structure variable to a Sub or Function procedure,its member variables are not automatically passed.

Question 16

You use the ____ member access operator to separate the structure variable's name from the member variable's name.

A) ()
B) arrow
C) asterisk
D) dot

Question 17

The members of a structure can be variables,constants,or ____.

A) structures
B) classes
C) procedures
D) control characters

Question 18

You can use the Strings.Space method to include a specific number of space characters in a string.

Question 19

Getting data from a file is referred to as "reading from the file," and sending data to a file is referred to as "writing to the file."

Question 20

In Visual Basic,you use a(n)____ to write a stream of characters to a sequential access file.

A) CreateText method
B) StreamReader object
C) StreamWriter object
D) AppendText method

Question 21

You should use the ____ method to close a sequential access file as soon as you are finished using it.

A) Exit
B) Close
C) End
D) Quit

Question 22

Which of the following statements will write the text "Programming" to a sequential access file?

Question 23

Which of the following statements can be used to fill a string variable with asterisks resulting in "*****$675.89"?

Question 24

Which of the following determines whether an item is selected in the lstTrees control?

Question 25

Which of the following statements will read data from a sequential access file?

A) inFile.Read
B) inFile.Peek
C) inFile.ReadWrite
D) inFile.ReadLine

Question 26

The ____ method writes a newline character after the data.

A) WriteLine
B) ReadLine
C) Write method
D) Read

Question 27

Assume that the variable amount contains the value 46.How many characters will be padded in the statement below? amount = amount.ToString.PadLeft(5)

A) two
B) three
C) four
D) five

Question 28

You need to create a report using the pictureFrame.txt sequential access file.The report provides a list of all picture frames with a size of 5x7.The report will be saved as another sequential access file named pictureFrame57.txt.Your first step is to ____.

A) declare a StreamWriter variable for the output file
B) open the pictureFrame57.txt file for output using the CreateText method
C) declare a StreamReader variable for the input file
D) open the pictureFrame.txt file

Question 29

In the syntax for the PadLeft method,____ is an integer that represents the total number of characters you want the string to contain.

A) totalChars
B) character
C) variable
D) string

Question 30

Which of the following can be used to determine whether the accounts.txt file exists?

Question 31

You can use the ____ to open a sequential access file for append.

A) CreateText method
B) StreamReader object
C) StreamWriter object
D) AppendText method

Question 32

After declaring a StreamReader variable,you can use the ____ to open a sequential access file for input;doing this automatically creates a StreamReader object.

A) OpenText method
B) Write method
C) StreamWriter object
D) ReadLine method

Question 33

Which of the following declares a StreamReader variable named newFile?

A) Dim inFile As IO.StreamReader
B) Dim newFile As IO.StreamReader
C) Dim newFile As IO.StreamWriter
D) Dim newFile As StreamReader

Question 34

Which of the following statements should be used first when opening the input file?

Question 35

Which of the following removes the sixth item from the lstTrees control?

Question 36

In Visual Basic,you use a(n)____ to read data from a sequential access file.

A) StreamWriter object
B) OpenText method
C) ReadLine method
D) StreamReader object

Question 37

After opening a file for input,you can use the ____ to read the file's contents,one line at a time.

A) ReadLine method
B) OpenText method
C) AppendText method
D) WriteLine method

Question 38

Which of the following statements will close the sequential access file associated with the outFile variable?

A) outFile.End()
B) outFile.Quit()
C) outFile.IO()
D) outFile.Close()

Question 39

Which of the following opens the employee.txt file for output,creates a StreamWriter object,and assigns it to the outFile variable?

Question 40

A(n)____ is defined as a sequence (stream)of characters followed by the newline character.

A) character
B) line
C) input
D) stream

Question 41

Write the statement that would write two columns of text to an output file named outFile.The first column,which contains the data for the strStudentID variable,must contain nine characters.The second column contains the data for the strLastName variable.

Question 42

Write a Structure statement that defines a structure named Order.The structure contains four member variables named strItemNum,strItemDesc,decPrice,and intQuantity.Then write the Dim statement that declares an Order variable named furniture.

Question 43

Write an If clause that determines whether the sequential access file named contacts.txt exists.If the file exists,open the file.If the file does not exist,display the message "File not found" in a message box.The application is named "View Contacts".

Question 44

Write the code to declare a variable named outFile that can be used to write data to a sequential access file.Then write the statement to open a sequential access file named customers.txt for output.

Question 45

Write the statement that would remove the item "RGT12985" from the lstPartNumber control.

Question 46

Write the code to declare a variable named outFile that can be used to write data to a sequential access file.Then write the statement to open a sequential access file named samples.txt for output.New data should be written to the file after any existing data in the file.

Question 47

Write a Structure statement that defines a structure named Vehicle.The structure contains three member variables named strMake,strModel,and intYear.Then write the Private statement that declares a Vehicle variable named truck.

Question 48

Write the code to declare a variable named inFile that can be used to read data from a sequential access file.Then write the statement to open a sequential access file named samples.txt for input.

Question 49

An application contains the Structure statement shown below:
Write a Dim statement that declares an eight-element one-dimensional array of SalonInfo variables.Name the array mySalonInfo.Write the code to store the following data in the array:

Question 50

What is the difference between an input file and an output file?

Question 51

Write a Do clause that reads each line of text in a sequential access file and assigns the line to the strTextLine variable.Process the loop until the end of the file has been reached.The file is associated with a StreamReader variable named inFile.

Question 52

Write the statement that would remove the selected item from the lstFlowers control if an item is selected.

Question 53

An application contains the Structure statement shown below:
Write a Dim statement that declares a Furniture variable named sofas.Then,write assignment statements that assign the value "Sectional" to the strStyle member,and assign the number 1895.99 to the decPrice member.

Question 54

You should ____ the pictureFrame.txt file as soon as you have finished using it.

A) Save
B) Read
C) Close
D) Peek

Question 55

Which of the following statements removes the selected line in the list box?

Question 56

An application uses the posterFrame.txt sequential access file to display all of the poster frames in a list box.You need to use the list box to select and remove any poster frames that are 16x20.Which of the following statements determines if a line is selected in the list box?

Question 57

Describe two advantages to programmers of using structures and structure variables.

Question 58

What is the difference between a structure and a structure variable?