1. use strict;
  2. use warnings;
  3. Unmatched parans in if (($sequence
  4. Use the "3 argument" open with a scalar filehandle (no bareword).
  5. You don't need ">" in the print statement, this would be more clear to you if you used 3 argument open.
  6. You can skip the parens in close.
  7. If you are only writing in the case of /ABC/, just open and close inside of the if statement.

In reply to Re: I can't find my mistake here!!! by perlfan
in thread I can't find my mistake here!!! by Anonymous Monk

Title:
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