Deck 13: Advanced Input and Output

Question 1

The ofile() function opens a data file.

Answer 1

False

Question 2

The ____ function controls the number of significant digits you see in the output.

A) setw()
B) setprecision()
C) precision()
D) width()

Answer 2

C

Question 3

The ____ function defines the size of the output field in which the next output will be displayed.

A) setw()
B) setprecision()
C) precision()
D) width()

Answer 3

D

Question 4

The ____ manipulator specifies the number of significant digits to display.

A) setw()
B) setprecision()
C) precision()
D) width()

Question 5

Temporary data storage exists in computer memory; it is lost when power is lost.

Question 6

The cin.get() statement can retrieve any character, including letters, numbers, punctuation, and white space such as the character generated by pressing the Enter key.

Question 7

The ____ function reads a line of text at the address represented by the first argument to the function until it reaches either the length used as the second argument or the character used as the third argument.

A) open()
B) ignore()
C) get()
D) getline()

Question 8

____ I/O is unformatted; that is, bytes are transferred into and out from memory without regard to the type of data they represent.

A) Low-level
B) High-Level
C) Primitive
D) Advanced

Question 9

____ I/O is formatted; that is, bytes are grouped into meaningful units such as integers, doubles, and class object types.

A) Low-level
B) High-Level
C) Primitive
D) Advanced

Question 10

The ____ function takes arguments that set the bits of cout ; that is, the arguments turn the bits in the format flag on.

A) setw()
B) setprecision()
C) setf()
D) unsetf()

Question 11

The ____ function takes a character argument and returns a reference to the object that invoked the function.

A) open()
B) ignore()
C) get()
D) getline()

Question 12

The ____ manipulator turns on bit codes for the attributes named as arguments.

A) setw()
B) setprecision()
C) setiosflags()
D) resetiosflags()

Question 13

No matter how many decimal positions a number contains, C++ will display five positions if you do not explicitly set a precision for output.

Question 14

The ____ function skips any additional characters left in the input stream after data is accepted.

A) open()
B) ignore()
C) unsetf()
D) getline()

Question 15

A ____ is a way to create a shorter, easier-to-remember nickname for an unwieldy identifier.

A) fixed
B) showbase
C) setf()
D) typedef

Question 16

The && and || operators are used for shifting bits in some contexts.

Question 17

Format flags are also known as state flags.

Question 18

The ____ manipulator allows you to set the width of a field for output.

A) setw()
B) setprecision()
C) setf()
D) width()

Question 19

The ____ function can be used to deselect a bit in the format flag.

A) setw()
B) setprecision()
C) setf()
D) unsetf()

Question 20

All format flags begin with iosf:: .

Question 21

____________________ flags are the arguments that determine the state of the cout object.

Question 22

A(n) ____________________ manipulator is a manipulator that takes an argument.

Question 23

The ____________________ manipulator displays numbers in hexadecimal form.

Question 24

C++ provides a(n) ____________________ manipulator to flush the stream without sending a newline character.

Question 25

The ____ manipulator turns off bit codes for the attributes named as arguments.

A) setw()
B) setprecision()
C) setiosflags()
D) resetiosflags()

Question 26

A(n) ____ mode indicates how a file is opened-for example, for input or output.

A) I/O
B) precision
C) stream
D) file

Question 27

A ____ consists of a number of data fields that are logically connected because they pertain to the same entity.

A) data field
B) data hierarchy
C) data record
D) data file

Question 28

The ____ manipulator displays octal numbers with a leading 0 and hexadecimal numbers with a leading 0x so you do not mistake them for base 10 (decimal) numbers.

A) showbase
B) oct
C) hex
D) fixed

Question 29

In addition to endl , C++ provides a(n) ____________________ manipulator to send a null (or space) character rather than a newline.

Question 30

Write a program in which a 10-character limit is applied to the entry of a user's name. The program should use the get() function and display the message "Hello," followed by the user's name.

Question 31

Mention one advantage and one disadvantage of using the get() function instead of the extraction operator (>>) with cin for keyboard data entry.

Question 32

A ____ represents the relationships between the sizes of data units that business professionals most often use.

A) database
B) data hierarchy
C) data record
D) data file

Question 33

A(n) ____________________ character separates data fields.

Question 34

A ____ represents one piece of data, such as a first or last name, phone or Social Security number, or salary.

A) data field
B) data hierarchy
C) data record
D) data file

Question 35

A group of related files is often stored in a ____.

A) database
B) data hierarchy
C) data record
D) data field

Question 36

The ____ is a key combination that indicates completion of data entry.

A) delimiting character
B) end-of-file indicator
C) data record
D) setiosflags

Question 37

The ____ key combination can be used to indicate an end-of-file.

A) Ctrl-c
B) Ctrl-f
C) Ctrl-z
D) Ctrl-e

Question 38

Why was Unicode developed?

Question 39

The ____________________ manipulator displays values in octal form.

Question 40

What is the syntax of the get() function?

Question 41

What happens when you use a delimiter other than '\n' with getline() ?

Question 43

What is a bit?

Question 46

What are some commonly used format flags?

Question 51

How is a file closed in C++?

Question 53

What are the ostream objects that C++ instantiates?

Question 55

Mention three file modes available in C++ for opening files.