sub openFile {
  # Should I declare my @entries here???
  if($file1) {
    open FH, "$file1" or die $!;
    @entries = <FH>;
    close FH;
  }
  if($file2) {
    open FH, "$file2" or die $!;
    @entries = <FH>;
    close FH;
  }
}