Chapter 2

Question 1

an _____ describes how a problem is solved by listing the actions that must be taken and the order of execution

Answer 1

algorithm

Question 2

after choosing names for your variables you must…?

Answer 2

specify their data type

Question 3

when you choose the name of your variable and then declare its data type you are ____ your ______.

Answer 3

declaring

variables

Question 4

simple data types for representing integers or floating-point number are called _____ ____ ___ or ____ ___

Answer 4

primitive data types

fundamental types

Question 5

doubles means ___ ___

Answer 5

double precision

Question 6

what is the cin object used for?

Answer 6

for reading input from the keyboard

Question 7

a _____ directs the user to input something

Answer 7

prompt

Question 8

what does cin stand for?

Answer 8

console input

Question 9

what is the&raquo_space; called?

Answer 9

the stream extraction operator

Question 10

A

Answer 10

from B to A

Question 11

A»B if this is the case which direction is the data floating?

Answer 11

from A to B

Question 12

how can you declare more than one variable at the same time?

Answer 12

by declaring them all in a comma separated list (eg. int i, j, k)

Question 13

is 
int count = 1 
equivalent to 
int count:
count = 1; ?

Answer 13

yes

Question 14

a variable _____ (must be/doesnt have to be) declared before it can be assigned a value.

Answer 14

must be

Question 15

when a variable is not assigned a value, what is the value called?

Answer 15

uninitialized

Question 16

what is assigning a value to a variable called?

Answer 16

initialization

Question 17

what is the scope of the variable?

Answer 17

it is the part of the program where the variable can be referenced

Question 18

what is an eqaul sign (=)?

Answer 18

an assignment operator

Question 19

after a variable is declared, you can assign it to a value by using a _____ ______

Answer 19

assignment statement

Question 20

to assign a variable you must a value to a variable, you must place the variable name to the _____ of the assignment operator

Answer 20

left

Question 21

a ___ ____ is an identifier that represent s a permanent value

Answer 21

named constant

Question 22

what is the syntax for declaring a constant

Answer 22

const datatype CONSTANTNAME = value;

Question 23

a constant ______ (must be/doesn’t have to be) declared and intialized in the same statement

Answer 23

must be

Question 24

by convention constants are named using ____

Answer 24

uppercase

Question 25

what is the storage size of short (short int)?

Answer 25

16 bit

Question 26

what is the storage size of unsigned short (unsigned short int)?

Answer 26

16 bit

Question 27

what is the storage size of int signed?

Answer 27

32 bit

Question 28

what is the storage size of unsigned (unsigned int)?

Answer 28

32 bit

Question 29

what is the storage size of long (long int)?

Answer 29

32 bit

Question 30

what is the storage size of unsigned long (unsigned long int)?

Answer 30

32 bit

Question 31

what is the storage size of float?

Answer 31

32 bit

Question 32

what is the storage size of double?

Answer 32

64

Question 33

long double?

Answer 33

80 bit

Question 34

what is a literal constant value?

Answer 34

a value that appears directly in the program

Question 35

what are the 5 operators for numeric data?

Answer 35

``` addition ( + ) subtraction ( - ) multiplication ( * ) division ( / ) modulus ( % ) ```

Question 36

what is the % operator called? what is it used to calculate?

Answer 36

modulus | remainder

Question 37

when both operands of a division are integers, what occurs?

Answer 37

the result of the division is the quotient and the fractional part is truncated

Question 38

modulus only works with ______ operands and yields the remainder after ______

Answer 38

integer | division

Question 39

the property even number % 2 = 0 | and odd number % 2 = 1 can be used to ....?

Answer 39

determine whether a number is even of odd

Question 40

what is a unary operator?

Answer 40

an operator with only one operand

Question 41

what is a binary operator?

Answer 41

an operator with two operands

Question 42

+ and - operators can be both ____ and ____

Answer 42

unary and binary

Question 43

what can the pow(a,b) function be used to compute?

Answer 43

a^b

Question 44

where is the pow function defined?

Answer 44

in the cmath library

Question 45

should you use 2 or 2.0 in the pow function?

Answer 45

2.0 (some C++ compilers may require it

Question 46

does C++ compilers follow bedmas?

Answer 46

yep!

Question 47

when using division always make the numerator a _____ _____ _____

Answer 47

decimal point number (eg. 5.0)

Question 48

what is time(0) defined under?

Answer 48

the header file ctime (library)

Question 49

what is += ?

Answer 49

addition assignment

Question 50

what is -= ?

Answer 50

subtraction assignment

Question 51

what is *= ?

Answer 51

multiplication assignment

Question 52

what is /= ?

Answer 52

division assignment

Question 53

what is %= ?

Answer 53

modulus assignement

Question 54

what is i += 8 equivalent to?

Answer 54

i = i + 8

Question 55

what is i -= 8 equivalent to?

Answer 55

i = i - 8

Question 56

what is i *= 8 equivalent to?

Answer 56

i = i * 8

Question 57

what is i /= 8 equivalent to?

Answer 57

i = i / 8

Question 58

what is i %= 8 equivalent to?

Answer 58

i = i % 8

Question 59

When is the assignment operator executed?

Answer 59

last (after other mathematical operations)

Question 60

the ++ and -- are two shorrthand operators for ____ and _____ a variable by ___

Answer 60

incrementing decrementing 1

Question 61

i++ (or ++ i) means if i was 3, then i becomes __

Answer 61

4

Question 62

i-- (or --i) means if is was 3, then j becomes ___

Answer 62

2

Question 63

i++ is known as...?

Answer 63

postfix increment (postincrement)

Question 64

I-- is known as ...?

Answer 64

postfix decrement (postdecrement)

Question 65

++i is known as...?

Answer 65

prefix increment (preincrement)

Question 66

--i is known as...?

Answer 66

prefix decrement (predecrement)

Question 67

what is ++var?

Answer 67

increment var by one, and use the new var value in statement

Question 68

what is --var?

Answer 68

decrement var by one, and use the new var value in statement

Question 69

what is var++?

Answer 69

increment var by one, and use the original var value in statement

Question 70

what is var--?

Answer 70

decrement var by one, and use the original var value in statement

Question 71

how can you convert a value from one type to another?

Answer 71

by using a casting operator

Question 72

what is the syntax of a casting operator?

Answer 72

static_cast(value)

Question 73

In static_cast(value), what is type?

Answer 73

type is the type you wish to convert your value to (eg. int double)

Question 74

In static_cast(value), what is value?

Answer 74

value is the the variable

Question 75

is c++ case sensitive?

Answer 75

yes