What have you done to debug this problem? At what position in the string does the "non-A" character get found? What character gets found?

I suggest printing the progress through the string, the position and the length of the string while your loop runs.

Consider reading readline and chomp.

In reply to Re: my script is not giving the result using last function by Corion
in thread my script is not giving the result using last function by ulaksh

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