Node:High, Next:if, Previous:Halt, Up:Reference
function High (ordinal_type_or_variable): ordinal_type;or
function High (array_type_or_variable): array_index_type;or
function High (string_variable): Integer;
For ordinal types or variables of that type, High returns the
highest value a variable of that type can assume.
For array types or variables of that type, High returns the
highest index a variable of that type can assume. Note: the result is of
the same type as the array index is. If the array has more than one
dimension, High returns the highest index in the first dimension.
If the argument is a string variable, High returns the
discriminant of the string type (i.e. its capacity).
High is a Borland Pascal extension.
program HighDemo;
type
Colors = (Red, Green, Blue);
var
Col: array [Colors] of (Love, Hope, Faithfulness);
Foo: Colors;
Bar: Integer;
Baz: String (123);
begin
Foo := High (Col); { yields Blue }
Bar := Ord (High (Col[Foo])); { yields Ord (Faithfulness), i.e., 2 }
Bar := High (Integer); { returns highest possible ``Integer'' }
Bar := High (Baz) { returns 123 }
end.