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Constant Declarations

A constant  associates an identifier with a constant value.

const_decl ::= const_def
const_def  ::= <identifier> = const_expr
const_expr ::= expr

A constant expression is an expression that can be evaluated during compilation by a mere textual scan without actually executing the program. Its operands are constants or standard functions that can be evaluated at compile time.

The standard constant identifier NIL is a zero pointer value. It is compatible with any other pointer type or procedural type.

Examples of constant declarations are:

  N = 100
  limit = 2*N - 1
  fullSet = [0..SIZEOF(BYTE)*8-1]


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Canterbury Pascal for JVM  (Last documentation update Sep 02, 2004)
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