Const Variables

The keyword const can be used to make a variable unchangeable.
The variable must be initialized at the same time it is declared.

const int x = 5;

Can be used in function parameter lists to ensure the parameter cannot be changed.

GOOD	ERROR
`void function (int x[]) { x[0] = 1; }`	`void function (const int x[]) { x[0] = 1; }`