SLIDE 3 I/O

Question 1

sequence of bytes (stream of bytes) from source to destination

Answer 1

Input/Output

Question 2

sequence of characters from the source to the destination

Answer 2

Stream

Question 3

sequence of characters from an input device to the computer

Answer 3

Input stream

Question 4

sequence of characters from the computer to an output device

Answer 4

Output stream

Question 5

Use ________ header file to receive data from keyboard and send output to the screen

Answer 5

iostream

Question 6

iostream contains definitions of two data types:

Answer 6

istream: input stream
ostream: output stream

Question 7

iostream has two variables:

Answer 7

cin: stands for common input
cout: stands for common output

Question 8

Variable declaration of istream and ostream is similar to:

Answer 8

istream cin;
ostream cout;

Question 9

To use cin and cout, the preprocessor directive _________ must be used

Answer 9

include <iostream></iostream>

Question 10

Input stream variables: type _____

Answer 10

istream

Question 11

Output stream variables: type _______

Answer 11

ostream

Question 12

The syntax of an input statement using cin and the extraction operator&raquo_space; is

Answer 12

cin&raquo_space; variable&raquo_space; variable…;

Question 13

The extraction operator&raquo_space; is _____

Answer 13

binary

Question 14

Left-side operand is an _________
Example: cin
Right-side operand is a __________

Answer 14

input stream variable

variable

Question 15

Entering a char value into an int or double variable causes serious errors, called

Answer 15

input failure

Question 16

skips leading whitespace, finds and stores only the next character

Answer 16

char variable

Question 17

skips leading whitespace, reads + or - sign (if any), reads the digits (including decimal for floating-point variables)

Answer 17

int or double variable

Question 18

executes when a program is run

Answer 18

main

Question 19

(subprogram) is a set of instructions

Answer 19

function

Question 20

Predefined functions are organized as a collection of libraries called

Answer 20

header file

Question 21

Inputs next character (including whitespace)
Stores in memory location indicated by its argument

Answer 21

get function

Question 22

The syntax of cin and the get function

Answer 22

cin.get (varChar);

Question 23

is a char variable
It is the argument (or parameter) of the function

Answer 23

varChar

Question 24

ignore function

Answer 24

Discards a portion of the input

Question 25

The syntax to use the function ignore is:

Answer 25

cin.ignore (intExp, chExp);

Question 26

intExp is an ______expression chExp is a _______expression

Answer 26

integer char

Question 27

Places previous character extracted by the get function from an input stream back to that stream

Answer 27

putback function

Question 28

Returns next character from the input stream Does not remove the character from that stream

Answer 28

peek function

Question 29

Syntax for putback

Answer 29

istreamVar.putback (ch);

Question 30

Syntac for peek

Answer 30

ch=istreamVar.peek();

Question 31

separates the input stream variable name from the member, or function, name

Answer 31

dot notation

Question 32

In C++, the dot is the

Answer 32

member access operator

Question 33

Things can go wrong during execution

Answer 33

Input Failure

Question 34

If an error occurs when reading data Input stream enters the

Answer 34

fail state

Question 35

Once in a fail state, all further I/O statements using that stream are ignored

Answer 35

The clear Function

Question 36

When the program continues to execute with whatever values are stored in variables, this function restores the input stream to a working state

Answer 36

The clear Function

Question 37

The syntax of the function clear is:

Answer 37

istreamVar.clear();

Question 38

setprecision Manipulator syntax

Answer 38

setprecision (n)

Question 39

Outputs decimal numbers with up to n decimal places Must include the header file iomanip #include

Answer 39

setprecision Manipulator

Question 40

outputs floating-point numbers in a fixed decimal format

Answer 40

fixed Manipulator

Question 41

outputs floating-point numbers in scientific format

Answer 41

scientific manipulator

Question 42

output to show the decimal point and trailing zeros

Answer 42

showpoint Manipulator/showpoint forces

Question 43

Reading and writing of long numbers can be error prone

Answer 43

C++14 Digit Separator

Question 44

digit separator

Answer 44

' (single-quote character)

Question 45

cannot be used to separate the digits of a number

Answer 45

commas

Question 46

Outputs the value of an expression in a specified number of columns

Answer 46

setw

Question 47

Additional formatting tools that give you more control over your output:

Answer 47

setfill manipulator left and right manipulators unsetf manipulator

Question 48

Output stream variables can use setfill to fill unused columns with a character

Answer 48

setfill Manipulator

Question 49

left-justifies the output

Answer 49

left manipulator

Question 50

Disable left by using

Answer 50

unsetf

Question 51

right-justifies the output

Answer 51

right manipulator

Question 52

Two types of manipulators

Answer 52

Those with parameters Those without parameters

Question 53

require the iomanip header ex. setprecision, setw, and setfill

Answer 53

Parameterized stream manipulators

Question 54

Manipulators without parameters require the _________ header ex. endl, fixed, scientific, showpoint, and left

Answer 54

iostream

Question 55

An input stream variable (such as cin) and >> operator can read a string into a variable of the data type ________

Answer 55

string

Question 56

Skips any leading whitespace characters Stops reading at a whitespace character

Answer 56

extraction operator

Question 57

reads until end of the current line

Answer 57

function getline

Question 58

are reported by the compiler

Answer 58

Syntax errors

Question 59

are typically not caught by the compiler

Answer 59

Logic errors

Question 60

is an area in secondary storage to hold info

Answer 60

file

Question 61

infinite sequence of characters from a source to a destination

Answer 61

Stream

Question 62

from a source to a computer

Answer 62

Input stream

Question 63

from a computer to a destination

Answer 63

Output stream

Question 64

reads data character-by-character

Answer 64

get

Question 65

skips data in a line

Answer 65

ignore

Question 66

puts last character retrieved by get back to the input stream

Answer 66

putback

Question 67

returns next character from input stream, but does not remove it

Answer 67

peek

Question 68

Attempting to read invalid data into a variable causes the input stream to enter the _____

Answer 68

fail state

Question 69

manipulators that can be used for formatting output

Answer 69

setprecision, fixed, showpoint, setw, setfill, left, and right

Question 70

Include ____________ for the manipulators setprecision, setw, and setfill

Answer 70

iomanip