Exam 1

Question 1

data types/variables

Answer 1

bool
char
int
double
string
etc.

Question 2

integer division

Answer 2

any fractional remainder of the answer is rounded down to the nearest integer

ex: 5/4 = 1 vs. 5.0/4.0 = 1.25

use casting to prevent this
int x = 5;
double y = 4;
double z = (double)x / y; // z = 1.25 since we cast x as a double

Question 3

variable name/identifier

Answer 3

must
- be a sequence of letters (a-z, A-Z), underscores (_), and digits (0-9)
- start with a letter or underscore

ex:
userName
pickleColor
pickle_color

Question 4

function

Answer 4

list of statements that can be executed by referring to the function’s name

function(argument)

Question 5

constants

Answer 5

const
- declare the variable as constant when you have values that are unlikely to change
- when you declare a constant variable, it must be assigned with a value

ex:
const int minutesPerHour = 60;

Question 6

boolean types

Answer 6

declared with the bool keyword and can only take the values true or false.

When the value is returned, true = 1 and false = 0.

Question 7

character types

Answer 7

declares a character (any kind: 3, &, a, A, -, etc) enclosed in single quotes (‘’)

ex:
char myLetter = ‘c’;

Question 8

string type

Answer 8

A string literal may contain spaces, periods, and other non-letter characters.

string literals are enclosed in “” (double quotes)

Question 9

casting

Answer 9

A type cast explicitly converts a value of one type to another type.

The static_cast operator –>
(static_cast<type>(expression)) converts the expression's value to the indicated type.</type>

Ex: If myIntVar is 7, then static_cast<double>(myIntVar) converts int 7 to double 7.0.</double>