====== CONST ======

[pet] [vic20] [c64] [c16] [cplus4] [c128] [x16] [m65]

The const directive defines a constant. Constants are named values that exist in compile-time only and are replaced with their numeric value in runtime.

===== Syntax =====

<code xcbasic>
[SHARED] CONST <name> = <value>
</code>
  
The <value> must be a numeric literal.

Constants themselves do not have a type. The [[datatypes#numeric_literals|type of the numeric literal]] will be used when a constant is used in an expression.

Constants have the same [[variables#variable_scope|visibility options]] as variables.

===== Examples =====

<code xcbasic>
' -- Constants can be used to improve the readability of your code
CONST BORDER = $d020
CONST BLACK = 0
POKE BORDER, BLACK
</code>