Chapter 3

Question 1

Which is correct?

cout&raquo_space;

cout

Answer 1

cout

Question 2

Which is correct?

cin&raquo_space;

cin

Answer 2

cin&raquo_space; .

Question 3

What is the preferred expression to promote or demote a value?

Answer 3

static_cast

Question 4

Variables:
int a=5, b=12
double x=3.4, z=9.1

What is the value of the expression?

b/a

Answer 4

2

Question 5

Variables:
int a=5, b=12
double x=3.4, z=9.1

What is the value of the expression?

x*a

Answer 5

17.0

Question 6

Variables:
int a=5, b=12
double x=3.4, z=9.1

What is the value of the expression?

static_cast”“(b/a)

Answer 6

2.0

Question 7

Variables:
int a=5, b=12
double x=3.4, z=9.1

What is the value of the expression?

static_cast(b) / a

Answer 7

2.4

Question 8

Stream Manipulator

setw(n)

Answer 8

Sets minimum print field width for the next value output.

Only set for one output

Right-justified default

Question 9

Stream Manipulator

fixed

Answer 9

Displays floating-point numbers in fixed-point (I.e., decimal) form

Question 10

Stream Manipulator

setprecision(n)

Answer 10

Sets the precision of floating point numbers. (Significant digits)

Use with fixed and setprecision(2) to show two decimal points (amounts)

Question 11

Stream Manipulator

showpoint

Answer 11

Causes a decimal point and trailing zeroes to be displayed for floating-point numbers, even if there is no fractional part

defaults to 6 significant digits, unless specified with setprecision(n)

Question 12

Stream Manipulator

left

Answer 12

Subsequent output will be left justified until changed.

Question 13

Stream Manipulator

right

Answer 13

Subsequent output will be right-justified until changed.

Question 14

Stream Manipulator

What header file is needed to use stream manipulators?

Answer 14

include iomanip

Question 15

How do you allow input with spaces?

Answer 15

getline(cin, inputLine)

inputLine is the name of the string variable.

Question 16

Member functions

How do you add 22 spaces to a string function?

Answer 16

spaces.assign(22, ‘ ‘);

Question 17

How do you find the number of characters in a string called fullName?

Answer 17

X = fullName.length()