use strict;
use warnings;

open (FILE, "a") or die "Unable to open ref file.\n";
chomp (my @data1 =<FILE>) ;
close(FILE);

open (FILE, "b") or die "Unable to open new file.\n";
chomp (my @data2 =<FILE> );
close(FILE);
my $size = @data1 < @data2 ? @data1 : @data2; 
my $result= @data1 < @data2 ? "File 1 has missing data" : "File 2 has missing data";
my $ori = @data1 == @data2 ? 1:0;
my $i;
for( $i = 0; $i < $size; $i++){
       if ($data1[$i] ne $data2[$i]){
        printf "%s is mismatch with %s\n",$data1[$i],$data2[$i];
       }
	else {
	printf "%s is match with %s \n",$data1[$i],$data2[$i];
	}

}
print "$result\n" if (!$ori);