This isn't the place to get homework done for you. We expect you to try it on your own, and then when you're stuck with some specific problem, we'll typically help you through that one issue. There's lots of perl on the net, google around find something close, cobble it together to try to accomplish your task, and google through the simple issues. Then come back with code and ask a specific question about why it does something you didn't expect, or doesn't do what you did expect.
Scot,
Thanks for your message. I did not want a solution to the problem but a breakdown of what was expected in a beginners terms. I know to obtain user input I have to use STDIN but how to write that obtain that with the whitespace is where my confusion lies and I would appreciate some explanation. It is not my homework just practicing Perl for beginners.
Please what does the sequence length mean?
Thanks
the sequence length is just the number of nucleotides in a sequence. such as 4, 100, 123
Is it supposed to look like this?
#!/usr/bin/perl
use strict;
use warnings;
chomp(my $input = <>);
print "$input\n";
if yes how do you put a limit on it for the user input?