It's because you have set $flag to '0', which is an uninterpolated string containing the character '0', a true value.

Instead, you should set $flag to zero, (0), without the single quotes. This will evaluate to false and make your logic all happy.


What can be asserted without proof can be dismissed without proof. - Christopher Hitchens, 1949-2011

In reply to Re: getting a while loop to terminate by thezip
in thread getting a while loop to terminate by Aldebaran

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