Variables, Types & Operators Flashcards

Vocabulary flashcards covering C# variables, data types, operators, and Unity concepts from the study guide.

Variable

A named place to keep a value of a declared type.

Declaration

Creating a variable with a type and name.

Initialization

Giving a variable its first value.

Assignment

Storing a new value in a variable later using the equals sign, which replaces the old value.

Identifier

The name given to something in code; may use letters, digits, and underscores, but cannot start with a digit.

camelCase

A naming convention where the first word is lowercase and each later word is capitalized, used for values.

Type

The kind of value a variable can hold.

int

A data type that holds whole numbers and counts, such as $12$.

float

A data type that holds decimals, times, and prices, written with an f suffix such as $3.75f$.

string

A data type that holds text inside double quotes, such as "Ready".

bool

A data type that holds true or false.

Literal

A value typed directly into code, like $12$ or "Hi".

Float suffix (f)

The f appended to a literal that marks it as a float value.

Type mismatch

A compile error caused by assigning a value that does not fit the declared type.

Modulo (%)

An arithmetic operator that gives the remainder of integer division.

Operator precedence

The order operators resolve in: Parentheses first, then multiplication (*), division (/), and modulo (%), then addition (+) and subtraction (-).

Integer division

Division where an int is divided by an int, causing the remainder to be thrown away.

String concatenation

Joining text together using the + operator once a string is on the left side of the expression.

Implicit conversion

A safe conversion that C# performs automatically on its own, like converting an int into a float.

Explicit conversion

A conversion that must be written out explicitly in code, such as using (int) to convert a float into an int.

Truncation

Cutting off the decimal part of a number without rounding.

Compound assignment

A short way to change a variable using its own value, such as +=, -=, *=, or /=.

Public field

A variable declared in the class outside Start() that appears in the Inspector, allowing editing without touching code.

Start()

The section in a MonoBehaviour script that runs once when the scene begins.