Deck 8: Io Streams and Data Files

Question 1

Long filenames should be avoided because they take more time to type and can result in typing errors.

Answer 1

True

Question 2

When a program is executed, the standard input stream cin is connected to the standard input device.

Answer 2

True

Question 3

You must specify a C-string s maximum length in brackets immediately after it s declared.

Answer 3

True

Question 4

Current versions of UNIX allow 14 characters as the maximum filename length.

Question 5

The close() function takes one argument.

Question 6

A(n) ____ is a one-way transmission path between a source and a destination.

A) file
B) object
C) external name
D) stream

Question 7

In addition to the get() method, all input streams have a set() method for putting the last character read from an input stream back on the stream.

Question 8

A(n) ____ is a one-way transmission path used to connect a file stored on a physical device, such as a disk or CD, to a program.

A) file stream
B) external stream
C) stream name
D) file name

Question 9

Input file stream objects are declared to be of type ____.

A) istream
B) iofstream
C) ifstream
D) ofstream

Question 10

A ____ is a collection of data stored together under a common name, usually on a disk, magnetic tape, USB drive, or CD/DVD.

A) file
B) directory
C) database
D) file stream object

Question 11

Opening a file connects a file stream object to a specific external filename.

Question 12

The DOS operating system allows ____ characters plus an optional period and 3-character extension as the maximum filename length.

A) 4
B) 8
C) 16
D) 32

Question 13

All computer operating systems use the same specification as to the maximum number of characters permitted for an external filename.

Question 14

The ____ method returns a true value if a file was opened unsuccessfully or a false value if the open succeeded.

A) fail()
B) open()
C) test()
D) close()

Question 15

A file is a collection of data stored together under a common name, usually on a disk.

Question 16

C++ supports physical file objects.

Question 17

The Excel program adds the ____ extension automatically to all spreadsheet files.

A) .xla or .xls
B) .xls or .xlsx
C) .xcl or .xclx
D) .wpx or .wpxl

Question 18

Each file has a unique filename, referred to as the file s ____.

A) storage ID
B) external ID number
C) storage name
D) external name

Question 19

A file stream that sends or writes data to a file is an ____.

A) input file stream
B) output file stream
C) external file stream
D) internal file stream

Question 20

C++ compilers require a program file with the extension ____.

A) .c
B) .ccc
C) .cpp
D) .c++

Question 21

Output file streams can be formatted in the same manner as the ____ standard output stream.

A) cout
B) cin
C) ccout
D) fout

Question 22

In declaring and initializing a string variable for use in an open() method, the string is considered a ____.

A) string object
B) C-string
C) c_str
D) c-character

Question 23

The ____ functions return the file position marker s offset value.

A) offset()
B) where()
C) seek()
D) tell()

Question 24

The fstream class s ____ function permits character-by-character output to a stream.

A) getline()
B) get()
C) putline()
D) put()

Question 25

A(n) ____________________ filename is how the operating system knows the file.

Question 26

C and C++ append the low-value hexadecimal byte ____ as the end-of-file (EOF) sentinel when the file is closed.

A) 0x01
B) 0x10
C) 0x00
D) 0x11

Question 27

For file streams, the direction, or mode, is defined in relation to the ____________________ and not the file.

Question 28

A file stream that receives or reads data from a file to a program is a(n) ____________________ file stream.

Question 29

The ____ method breaks the connection between the file s external name and the file stream object.

A) open()
B) fail()
C) bad()
D) close()

Question 30

In ____, any character in the opened file can be read without having to sequentially read all characters stored ahead of it first.

A) sequential access
B) sequential organization
C) random access
D) random organization

Question 31

For each file your program uses, a distinct ____________________ stream object must be created.

Question 32

Two basic types of files exist: text files, and ____________________ files.

Question 33

You must check that the ____ method established a connection between a file stream and an external file successfully because this type of call is a request to the OS that can fail for various reasons.

A) connect()
B) conn()
C) open()
D) file()

Question 34

The ____ function is a request to the operating system to end program execution immediately.

A) end()
B) break()
C) terminate()
D) exit()

Question 35

All input streams have a ____ function for putting back the last character read from an input stream back on the stream.

A) put()
B) putback()
C) return()
D) sendback()

Question 36

A(n) ____ file object is a stream that connects a file of logically related data, such as a data file, to a program.

A) external
B) internal
C) physical
D) logical

Question 37

The term ____ refers to the process of retrieving data from a file.

A) file connection
B) file access
C) stream connection
D) stream access

Question 38

The fstream class s ____ function is used for character-by-character input from an input stream.

A) get()
B) getline()
C) getchar()
D) next()

Question 39

The term ____ refers to the way data is stored in a file.

A) file organization
B) file access
C) sequential access
D) database

Question 40

The standard error stream is represented by ____ in C and C++.

A) cin
B) cout
C) cerr
D) clog

Question 41

In C and C++, the ___________________ sentinel is never counted as part of the file.

Question 42

The standard log stream is represented by ____________________ in C and C++.

Question 43

The ____________________() methods allow the programmer to move to any position in a file.

Question 44

Reading data from a(n) ___________________-based file is almost identical to reading data from a standard keyboard.

Question 45

There are two types of file access: sequential access and ____________________ access.

Question 46

The ___________________() method returns a false value if the file was opened successfully.

Question 47

To understand file access types, first you need to understand how data is ____________________ in a file.

Question 48

In using ifstream and ofstream objects, the input or output mode is indicated by the ____________________.

Question 49

Using the seek() functions in random access, a(n) ____________________ offset means move forward in the file.

Question 50

A file stream object may be passed to a function as long as the function s formal parameter is defined as a(n) ____________________ to the appropriate stream.