Constants can be used to store values that don't change during the execution of your program.
Constants must be declared in your program before use with the Const command. Declaring a constant means defining a name, type and initial value for it.
The general syntax for declaring a constant is:
- Const Identifier @: Type @= ConstantExpression
Const STARTUP_SIZE=1000 Const SCREEN_WIDTH=640,SCREEN_HEIGHT=480 Const SCREEN_AREA=SCREEN_WIDTH*SCREEN_HEIGHT Const SCALE_FACTOR:Float=1.5 Const DEFAULT_TITLE:String="Mark Sibly"
Multiple constants may be declared per Const statement using the comma separator.
If no type is provided for a constant, the constant defaults to being of type Int.
The initial value for a constant may be an expression, but the expression must itself be constant - it may only use other constants or literals and may not use any variables.