sub extract_comments {
my $filename = shift;
local (*F, $/);
open F, "< $filename" or warn("can't read $filename: $!"), 
return;


@hello1=grep defined, <F> =~ m{
( \# .*? \n ) # extract a comment starting in # 
#and finishing in an enter
| " (?: [^"\#]* | \#. )* " # skip over "..."
| ' (?: [^'\#]* | \#. )* ' # skip over '...'
| . [^\#"']* # skip over non-comments-or-quotes
}xgs;
$tam=@h...;
print "Tam: $tam\n";

return @hello;
}

$file="ex1.pl";
@ola=extract_comments($file);
foreach $line (@ola){
print"$line\n";
}