Change the prefix to the filename: 
open (OUT, ">$inputfile.out") or die "cannot open file: $!\n";

[download]
This will open the file for output, creating it if it does not already exist. '+' gives you read and write access to a file, but it will only be created if you open the file for output or appending.

In reply to Re: Creating file at run time by kilinrax
in thread Creating file at run time by Anonymous Monk

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