What Are Variables and Data Types?

Variables

A variable is simply a name to which a value can be assigned. Under the hoods, a variable is a named memory location that holds data during program execution. Think of it as a labeled container that we can use to store and manage information throughout our code.

Programmers use symbolic names to describe a specific type of information in the solution being coded. For example, if we want to calculate the area of a rectangle, the rectangle’s length is one piece of information, and the width is the second piece of required information. Inside the code, these two values would be treated as variables. ...