If your post is homework, as blindluke surmised, the local guidance suggests that you mark it -- plainly! -- as such.

But even before we get to that little nicety, please read On asking for help, How do I post a question effectively?, I know what I mean. Why don't you?, Markup in the Monastery and Perl Monks Approved HTML tags for some hints about how to ask a question... and how to format a post. The short-form directions are right there at the text-entry box where you concocted this mess errrr, uh, posted the unformatted node.

We don't appreciate posts without markup (they're hard to read, and since you're asking for free help, you'll want to make providing that as easy as possible for would-be helpers; we do expect you to have shown some effort -- as in read the docs (here, as an aside, you may wish to start with the Tutorials section, the book "Learning Perl" or one of the many online courses -- commonly found in the .edu domain.

After you've gotten yourself up to speed, please do come back with your code, your intent, your errors (and warnings) verbatim, and an explanation of how the results come up short of what you wanted or expected. At that point, you'll find the Monks at PM are more than happy help you get over your stumbling block and generous in the extreme with advice.