Hi there , Can someone tell me which approch to follow when doing this ? I have two file that contain information as follow : 

 --DATA1--            --DATA2-- 
Monk Apple   One         Sam  Orange  Two    
Sam  Orange  Two         Sue  Apple   One    
Sue  Apple   One         Monk Apple   One
                         Mike Bannana One
                         Don  Apple   Two

[download]
What I need to do is compare Data1 file with Data2 file and print the different on Data3 file, I only print the name of the person, so My Data3 will look like this 
--DATA3--
Don
Mike

[download]
I was following an approach of using arrays 

my @Found = ();

while (my $line = <DATA1>)
{
chomp $line1;

while (my $line2 = <DATA2>)
{
chomp $line2;

if ("$line1" eq "$line2") {}
else { push @Found, $line2 }
}
}

open (DATA3, "data3") or die;
{
print @Found;
}

[download]
Not finding the difference between the two files. Can someone help ? thanks a lot

In reply to comparign two files by Anonymous Monk

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