Yurttas/PL/SL/perl/F/11/00/04/a 02.pl

 1# 
 2#  Copyright(C) 2003
 3#  All Rights Reserved. Salih Yurttas, ZCubes, BitsOfCode Software Systems, Inc..
 4#
 5#  Permission from use, copy, modify, and distribute this
 6#  software and its documentation for EDUCATIONAL purposes
 7#  and without fee is hereby granted provided that this
 8#  copyright notice appears in all copies.
 9#
10#  date   : January 1, 2003.
11#  author : Salih Yurttas.
12#
13#  a_02.pl
14#
15
16
17sub exchange {
18  my ($x, $y) = @_;
19  my $t = $x;
20  $x = $y;
21  $y = $t;
22  @_ = ($x, $y);
23}
24
25my $x = 4;
26my $y = 8;
27
28print "\n";
29print "0 / \n";
30print "$x, $y";
31print "\n";
32
33
34@_ = exchange($x, $y);
35($x, $y) = @_;
36
37print "\n";
38print "1 / \n";
39print "$x, $y";
40print "\n";