Thanks for the post! I came up with the regex for the positive ints. 

while( my $num = <DATA> ) {
        chomp($num);
        ## print "num=[$num]\n";
        if ( $num =~ /^[1-9]\d*$/ ) {
                $ctrP++;
        }

[download]

I would like for it to be in regular expressions so that I can learn how to use them properly. I am having trouble so that the regex for the negative ints finds only negative ints.

In reply to Re^2: Regex to find the number of positive, negative, and 0 integers within a data set by neveraloneneverapart
in thread Regex to find the number of positive, negative, and 0 integers within a data set by neveraloneneverapart

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