How come this for loop makes an infinite loop?

The condition for loop termintion $loop != $input will
happen only if a positive integer is entered as
$input.

--- lord_vodka_ccccccxxxxxxvi
<lord_vodka_ccccccxxxxxxviyahoo.com> wrote:

> 
> print "Input ";
> $input = <STDIN>;
> chomp($input);
> print newline; print newline;
> TONE_ROW = (1,2,3,4,5,6,7,8,9,10,11,12);
> print TONE_ROW;
> print newline; print newline;
> print newline; print newline;
> 
> for($loop = 0; $loop != $input, $loop = $loop + 1; )
> 		{
> 		print "TONE_ROWnn";
> 		push(TONE_ROW, shift(TONE_ROW));
> 		}
> 
> 


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