Variables

Question 1

alphanumeric values

Answer 1

characters that include both letters (A–Z) and numbers (0–9)

Question 2

assignment operator

Answer 2

A symbol used to assign a value to an identifier.

Question 3

assignment statement

Answer 3

a line of code that assigns a value to a variable (ex. x=5)

Question 4

binary operator

Answer 4

an operator that receives two operands (ex. + - / *)

Question 5

camel casing

Answer 5

a naming convention where the first letter is lowercase and each subsequent word starts with an uppercase letter, like myVariableName

Question 6

garbage

Answer 6

unused or leftover data in memory that the program no longer needs or references

Question 7

Hungarian notation

Answer 7

a naming convention where the name of a variable starts with a prefix indicating its type, like strName for a string variable

Question 8

identifier

Answer 8

A name you create in code to refer to something

Question 9

initializing a variable

Answer 9

assigning an initial value to a variable when it is declared, like int x = 10

Question 10

kebob case

Answer 10

a naming convention where words are all lowercase and separated by hyphens, like my-variable-name

Question 11

keyword (reserved word)

Answer 11

a reserved word in a programming language that has a specific meaning and cannot be used as an identifier, like if, while, and class

Question 12

lvalue

Answer 12

any value that refers to a location in memory. Can be both identifiers and expressions that refer to a location in memory. Typically sits on left of assignment operator.

Question 13

mixed case with underscores

Answer 13

a naming convention that combines uppercase and lowercase letters with underscores between words, like My_Variable_Name

Question 14

numeric constant

Answer 14

a fixed number value written directly in the code, like 42 (Is an unnamed constant that is specifically numeric)

Question 15

numeric variable

Answer 15

a variable that holds a number value

Question 16

operand

Answer 16

a value or variable on which an operator acts, like 3 and 5 in 3 + 5

Question 17

Pascal casing

Answer 17

a naming convention in which each word in the name starts with an uppercase letter, like MyVariableName

Question 18

right-to-left associativity

Answer 18

When operators of the same precedence are evaluated from right to left

Question 19

snake casing

Answer 19

a naming convention where identifiers are all lowercase and separated by underscores, like my_variable_name

Question 20

string constant

Answer 20

Immutable string data. Operations can be applied but string can’t be changed.

Question 21

string variable

Answer 21

A variable that refers to a string value. It is stored in writable memory and can be changed

Question 22

type safety

Answer 22

ensuring a variable is only used in ways consistent with its data type, preventing type errors. (Regardless of how variable is stored)

Question 23

unnamed constant

Answer 23

A fixed value written directly in code without a descriptive name

Question 24

variable

Answer 24

a named storage location in memory that can hold different values throughout a program