fig08_05.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 45 行

#!usr/bin/perl
# Fig 8.5: fig08_05.pl
# Using alternation.

use strict;
use warnings;

my $string1 = "i think we should stop";
my $string2 = "lets continue";
my $string3 = "i don't want to end";

finish( $string1 );
finish( $string2 );
finish( $string3 );

sub finish
{
   my $string = shift();
   print "$string\n";

   if ( $string =~ /stop|quit|end/ && 
        $string !~ /not|don't/ ) {
      print "alright, we're finished.\n";
   }
   else {
      print "ok, lets keep going.\n";
   }
}

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