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- {
- GPC demo program. Automatically setting discriminants of variant
- records in `New'. (This is a Standard Pascal feature missing in many
- popular Pascal compilers.)
-
- Copyright (C) 1999-2001 Free Software Foundation, Inc.
-
- Author: Frank Heckenbach <frank@pascal.gnu.de>
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation, version 2.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-
- As a special exception, if you incorporate even large parts of the
- code of this demo program into another program with substantially
- different functionality, this does not cause the other program to
- be covered by the GNU General Public License. This exception does
- not however invalidate any other reasons why it might be covered
- by the GNU General Public License.
- }
-
- program VariantRecordsDemo;
-
- type
- VariantRecord = record
- case Color : (Red, Green, Blue) of
- Red : (RedFoo : Integer);
- Green : (GreenBar : Real);
- Blue : (BlueBaz : Boolean)
- end;
-
- const
- ColorNames : array [Red .. Blue] of String (5) = ('Red', 'Green', 'Blue');
-
- var
- v : ^VariantRecord;
-
- begin
- New (v, Red);
- Writeln (ColorNames [v^.Color]);
- Dispose (v);
- New (v, Green);
- Writeln (ColorNames [v^.Color]);
- Dispose (v);
- New (v, Blue);
- Writeln (ColorNames [v^.Color]);
- Dispose (v);
- end.
-