I have some code, a simple test program to get me re-acquainted with the syntax and all after a break.
However, my computer absolutely refuses to run it. My command prompt locks up. It's nothing tasking or anything, and it won't tell me what's wrong. Any ideas?
Edit: Fixed using ideas from the CB, and it still won't start. :(

use strict;
use warnings;
my ($i, $j, $x, $tot);
my @exes;
print "Please enter for how many values of x you will be finding the 
Standard Deviation.\n";
do {chomp($i=<>); print "\nPlease only use numbers.\n" if $i=~m/\D/;} 
until($i!~m/\D/ and $i=~m/\d/);
print "\nPlease input the values of x, one at a time.\n";
for $j(1..$i){
    do {chomp($x=<>); print "\nPlease only use numbers.\n" if $x=~m/\D
+/;} 
until($x!~m/\D/ and $x=~m/\d/);
    push @exes, $x;}
undef $x;
for(@exes){
    $x=$x+$_;}
my $ave=$x/$i;
for(@exes){
    $tot=$tot+(($_-$ave)^2);}
my $deviation=sqrt($tot/$i);
print "\nThe Standard Deviation of that set of numbers is $deviation.\
+n";
[download]

Thanks.

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