Ord¶

Return ordinal value of an ordinal type.

Declaration¶

Source position: system.fpd line 58

function Ord(X: TOrdinal) : LongInt;

Description¶

Ord returns the Ordinal value of a ordinal-type variable X.

Historical note:

Originally, Pascal did not have typecasts and ord was a necessary function in order to do certain operations on non-integer ordinal types. With the arrival of typecasting a generic approach became possible, making ord mostly obsolete. However ord is not considered deprecated and remains in wide use today.

Errors¶

None.

See also¶

Name	Description
Chr	Convert byte value to character value.
Succ	Return next element of ordinal type.
Pred	Return previous element for an ordinal type.
High	Return highest index of open array or enumerated.
Low	Return lowest index of open array or enumerated.

Example¶

Program Example45;

{ Program to demonstrate the Ord,Pred,Succ functions. }

Type
  TEnum = (Zero, One, Two, Three, Four);

Var
  X : Longint;
  Y : TEnum;

begin
  X:=125;
  Writeln (Ord(X));  { Prints 125 }
  X:=Pred(X);
  Writeln (Ord(X));  { prints 124 }
  Y:= One;
  Writeln (Ord(y));  { Prints 1 }
  Y:=Succ(Y);
  Writeln (Ord(Y));  { Prints 2}
end.