/* 

  Variable (Rosetta code) in Picat.

  http://rosettacode.org/wiki/Variables
  """
  Demonstrate a language's methods of:

  - variable declaration
  - initialization
  - assignment
  - datatypes
  - scope
  - referencing, and
  - other variable related facilities
  """

  Se Prolog for a long comment on Prolog!

  This program was created by Hakan Kjellerstrand, hakank@gmail.com
  See also my Picat page: http://www.hakank.org/picat/

*/

% import v3_utils.
% import util.
% import cp.


main => go.

% cf Prolog
% - no declaration of a variable is needed
%   a variable can take any type of value
%   and can re-assigned to any type of value

go ?=>
  X = 2, % assignment
  X := 3, % re-assignment
  S = "string",
  N = 123, % number
  C = 'c', % character
  
  nl.
go => true.