Question 1

Which of the following is the directive you must use to access files from a C++ program?

Accepted Answer

A) #include B) #include C) #include D) #include E) None of these A) #include B) #include C) #include D) #include E) None of these C

Question 2

The ios::hardfail bit is set when an unrecoverable error occurs.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following means accessing information from a file non-sequentially?

Accepted Answer

A)  linear access 
B)  incremented acces 
C)  random access 
D)  protected access 
E)  None of these 
A)  linear access 
B)  incremented acces 
C)  random access 
D)  protected access 
E)  None of these C

Question 4

Which of the following is the member function that writes a single character to a file?

Accepted Answer

A)  get 
B)  write 
C)  put 
D)  insert 
E)  None of these 
A)  get 
B)  write 
C)  put 
D)  insert 
E)  None of these

Question 5

Which of the following statements opens a file named info.txt for both input and output?

Accepted Answer

A)  dataFile.open("info.txt", ios::in && ios::out); 
B)  dataFile.open("info.txt", ios::in, ios::out); 
C)  dataFile.open("info.txt", input || output); 
D)  dataFile.open("info.txt", ios::in | ios::out); 
E)  None of these 
A)  dataFile.open("info.txt", ios::in && ios::out); 
B)  dataFile.open("info.txt", ios::in, ios::out); 
C)  dataFile.open("info.txt", input || output); 
D)  dataFile.open("info.txt", ios::in | ios::out); 
E)  None of these

Question 6

When a file is opened, the file stream object's "read position" is

Accepted Answer

A)  at the end of the file 
B)  at the beginning of the file 
C)  nonexistent until the programmer declares it 
D)  in the middle of the file 
E)  None of these 
A)  at the end of the file 
B)  at the beginning of the file 
C)  nonexistent until the programmer declares it 
D)  in the middle of the file 
E)  None of these

Question 7

Which of the following is the state bit that is set when an attempted operation fails?

Accepted Answer

A)  ios::failbit 
B)  ios::badbit 
C)  ios::hardfail 
D)  ios::goodbit 
E)  None of these 
A)  ios::failbit 
B)  ios::badbit 
C)  ios::hardfail 
D)  ios::goodbit 
E)  None of these

Question 8

In order, the three-step process of using a file in a C++ program involves

Accepted Answer

A)  insert a disk, open the file, remove the disk 
B)  create the file contents, close the file, name the file 
C)  open the file, read/write/save data, close the file 
D)  name the file, open the file, delete the file 
E)  None of these 
A)  insert a disk, open the file, remove the disk 
B)  create the file contents, close the file, name the file 
C)  open the file, read/write/save data, close the file 
D)  name the file, open the file, delete the file 
E)  None of these

Question 9

Closing a file causes any unsaved information still held in the file buffer to be

Accepted Answer

A)  saved to the file 
B)  deleted 
C)  retained in the buffer for safekeeping 
D)  duplicated 
E)  None of these 
A)  saved to the file 
B)  deleted 
C)  retained in the buffer for safekeeping 
D)  duplicated 
E)  None of these

Question 10

To set up a file to perform I/O you must declare

Accepted Answer

A)  at least one variable, the contents of which will be written to the file 
B)  one or more file stream objects 
C)  a string object to store the file contents 
D)  All of these 
E)  None of these 
A)  at least one variable, the contents of which will be written to the file 
B)  one or more file stream objects 
C)  a string object to store the file contents 
D)  All of these 
E)  None of these

Question 11

Which of the following is the member function that can be used to store binary data to a file?

Accepted Answer

A)  binary.out 
B)  write 
C)  put << 
D)  dataout(binary) 
E)  None of these 
A)  binary.out 
B)  write 
C)  put << 
D)  dataout(binary) 
E)  None of these

Question 12

When data is read from a file, it is automatically stored in a variable.

Accepted Answer

A) True 
 B)False

Question 13

Data stored __________ disappears once the program stops running or the computer is powered down.

Accepted Answer

A)  on a CD 
B)  in RAM 
C)  on a flash drive 
D)  on the disk drive 
E)  None of these 
A)  on a CD 
B)  in RAM 
C)  on a flash drive 
D)  on the disk drive 
E)  None of these

Question 14

An alternative to using the open member function is to use the file stream object declaration itself to open the file. For example:
fstream DataFile("names.dat", ios:
:
in | ios:
:
out);

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is the member function that reads a single character from a file?

Accepted Answer

A)  read 
B)  get 
C)  put 
D)  input 
E)  None of these 
A)  read 
B)  get 
C)  put 
D)  input 
E)  None of these

Question 16

Which of the following is the data type that can be used to create files, read data from them, and write data to them?

Accepted Answer

A)  ofstream 
B)  ifstream 
C)  fstream 
D)  stream 
E)  None of these 
A)  ofstream 
B)  ifstream 
C)  fstream 
D)  stream 
E)  None of these

Question 17

Which statement opens a file in such a way that information will only be written to the end of the file?

Accepted Answer

A)  dataFile(open.append("info.dat"); 
B)  dataFile.open("info.dat", ios::out | ios::app); 
C)  datFile.open = "c:\info.dat" ios::append; 
D)  open(dataFile.append); 
E)  None of these 
A)  dataFile(open.append("info.dat"); 
B)  dataFile.open("info.dat", ios::out | ios::app); 
C)  datFile.open = "c:\info.dat" ios::append; 
D)  open(dataFile.append); 
E)  None of these

Question 18

By default, files are opened in binary mode.

Accepted Answer

A) True 
 B)False

Question 19

When used by itself, the ios::app flag causes the file's existing contents to be deleted if the file already exists.

Accepted Answer

A) True 
 B)False

Question 20

When passing a file stream object to a function, you should always pass it by reference.

Accepted Answer

A) True 
 B)False

Exam 12: Advanced File Operations

Which of the following is the directive you must use to access files from a C++ program?

The ios::hardfail bit is set when an unrecoverable error occurs.

Which of the following means accessing information from a file non-sequentially?

Which of the following is the member function that writes a single character to a file?

Which of the following statements opens a file named info.txt for both input and output?

When a file is opened, the file stream object's "read position" is

Which of the following is the state bit that is set when an attempted operation fails?

In order, the three-step process of using a file in a C++ program involves

Closing a file causes any unsaved information still held in the file buffer to be

To set up a file to perform I/O you must declare

Which of the following is the member function that can be used to store binary data to a file?

When data is read from a file, it is automatically stored in a variable.

Data stored __________ disappears once the program stops running or the computer is powered down.

An alternative to using the open member function is to use the file stream object declaration itself to open the file. For example: fstream DataFile("names.dat", ios: : in | ios: : out);

Which of the following is the member function that reads a single character from a file?

Which of the following is the data type that can be used to create files, read data from them, and write data to them?

Which statement opens a file in such a way that information will only be written to the end of the file?

By default, files are opened in binary mode.

When used by itself, the ios::app flag causes the file's existing contents to be deleted if the file already exists.

When passing a file stream object to a function, you should always pass it by reference.

Introduction to Computers and Programming

Introduction to C

Expressions and Interactivity

Making Decisions

Loops and Files

Functions

Arrays and Vectors

Searching and Sorting Arrays

Pointers

Characters, C-Strings, and More About the String Class

Structured Data

Introduction to Classes

More About Classes

Inheritance, Polymorphism, and Virtual Functions

Exceptions and Templates

The Standard Template Library

Linked Lists

Stacks and Queues

Recursion

Binary Trees

Filters