Lesson 2 - Using Data

Question 1

Constant

Answer 1

Value can’t be changed while program is running

Question 2

Literal constant

Answer 2

Value taken literally at each use

Question 3

Numeric constant

Answer 3

Opposite of character/string constant

Question 4

Unnamed constant

Answer 4

No identifier associated with it

Question 5

Variable

Answer 5

Named meme pry location that can store a value

Can hold only one value at a time

Question 6

Data type

Answer 6

Describes the type of data that can be stored, how much memory it occupies, and what types of operations can be performed on the data.

Question 7

Primitive type

Answer 7

Simple data type

Uncomplicated

Question 8

Reference types

Answer 8

Hold memory addresses

Built from primitive types of data

Question 9

Variable declaration

Answer 9

Statement that reserves a named memory location and includes

A data type that identifies the type of data that the variable will store

And identifier that is the variables name

An optional assignment operator and assigned value

A semicolon

Question 10

Strongly typed language

Answer 10

A language in which each variable has a well defined data type that limits the operations you can perform on it

Question 11

Camel casing

Answer 11

Beginning something with identifier and having subsequent words capitalized

Ex.
initialValue

Question 12

Assignment operator

Answer 12

=

Question 13

Initialization

Answer 13

An assignment made when a variable is declared

Question 14

Assignment

Answer 14

Assignment made to variable after initial initialization

Question 15

Associativity

Answer 15

The order in which values are used with operators

Question 16

Ivalue

Answer 16

An item that can appear on left side of value

Question 17

rvalue

Answer 17

An item that can appear on right side of value

Question 18

Uninitialized variable

Answer 18

Declaring a variable within method but not assigning value to it

Ex.

int Age;

Instead of

int Age=25;

Question 19

Garbage value

Answer 19

An unknown value in an uninitialized variable

Question 20

Named constant

Answer 20

Also known as symbolic constant
A variable whose content does not change

The data type is final

An ply be assigned once and cannot be changed

Identifiers are all uppercase, with underscores separating words

Question 21

Blank final

Answer 21

Named constant that is not initialized

Question 22

Magic number

Answer 22

A value that does not have an immediate intuitive meaning or a number that cannot be explained without additional knowledge

Question 23

Scope

Answer 23

Area in which a satay type is visible to the program and can be referred back to

Question 24

Block of code

Answer 24

Code between curly braces

Question 25

null

Answer 25

empty

Question 26

integer

Answer 26

whole number without decimals, int is its data type

Question 27

lossy conversion

Answer 27

a conversion in which data is lost

Question 28

boolean variable

Answer 28

a variable that can only hold two values: true or false

Question 29

relation operator

Answer 29

compares two items, also known as comparison operator

Answer 30

less than

Question 31

>

Answer 31

greater than

Question 32

==

Answer 32

Equal to

Question 33

<=

Answer 33

less than or equal to

Question 34

>=

Answer 34

greater than or equal to

Question 35

!=

Answer 35

not equal to

Question 36

null

Answer 36

empty

Question 37

integer

Answer 37

whole number without decimals, int is its data type

Question 38

lossy conversion

Answer 38

a conversion in which data is lost

Question 39

boolean variable

Answer 39

a variable that can only hold two values: true or false

Question 40

relation operator

Answer 40

compares two items, also known as comparison operator

Answer 41

less than

Question 42

>

Answer 42

greater than

Question 43

==

Answer 43

Equal to

Question 44

<=

Answer 44

less than or equal to

Question 45

>=

Answer 45

greater than or equal to

Question 46

!=

Answer 46

not equal to