Perl

my $line; my $content; open (FN,"D:\PerlDemo\parse.xml") or die "not found $!";

while($line=<FN>){ next if $. < 5; last if $. >10; $content.=$line; }

close(FN);

print "$content \n";

my $K=<STDIN>;

my @R =qw (A B C D); my @m =qw (a b c d); my @r =qw (h k ); my @j=(@R , @m , @r);

for(@j){ print $_ ."\t"; }

while(my($key,$value) = each @R){ print "key= $key value =$value \n"; }

foreach $index(0 .. $#R){ print "index $index : $R[$index] \n"; }

print @R ."\n" ; print scalar(@R) ."\n";

open (FN ,'<:encoding(UTF-8)',"$fileName") ; open (FN,'>:utf8',"$fileName") ;