CONST statement

There are two forms of const statement. These are

• manifest constant
• constant data

A manifest constant is a constant with a name. There is no storage allocated to it in the program. It is used to assign meaning to a number.

Constant data on the other hand is data that is stored in the programs code space. Tables and strings which do not change when a program is executed are normally declared as constant data and stored in the programs code space.

constant data is declared with a type (shown here in green)

e.g.
	const long bert = 1

manifest constants are declared without a type

e.g.
	const fred = 100

A constant data array (or table) is declared with multiple values

e.g.
	const long bert = 1, 2, 3, 5, 7, 11, 13

A constant string is a constant data array of characters and is defined as

e.g.
	const char bill = "hello world"