Front

Variable

Back

Stores data that can change during program execution

Front

Constants

Back

Stores fixed values that cannot change.

Front

Integer

Back

Whole numbers. (3, 5, -6, -25)

Front

Real/Single/Double

Back

Numbers with decimals. (2.4, 5.67)

Front

Boolean

Back

True or False. (T or F, 0 or 1, No or Yes)

Front

Character

Back

Single letter, number, or symbol. ("a", "%", "7")

Front

String

Back

A series of characters. ("Hello", "goodbye", "yellow")

Front

Casting

Back

Converting data from one type to another.