C++ Academy · Lesson

Variables, Auto Type Inference and constexpr

Declare variables, use auto for type deduction, and learn when to mark values constexpr.

What is a Variable?

A variable is a named region of memory with a type. The type fixes how many bytes it occupies and how the bits are interpreted.

The classic form: type name = value;

int age = 30;
double pi = 3.14159;
char grade = 'A';
bool isReady = true;