#!/usr/bin/perl 
use warnings;
use Noactions;

sub Post::NUM::action {
  return $_[1];
}

sub Post::PLUS::action {
  "$_[1] $_[3] +";
}

sub Post::TIMES::action {
  "$_[1] $_[3] *";
}

my $debug = shift || 0;
my $parser = Noactions->new( yyprefix => 'Post::');

print "Write an expression: "; 
my $x = <STDIN>;

my $t = $parser->Run($debug, $x);

print "$t\n" unless $parser->YYNberr;