The three if-statements you have makes it possible that all three applies; 
if ($Salesperson eq "") {
     print "Location:
     http://localhost/cgi-bin/c12ex3b.html\n\n";
}

if ($Sales == "") {
      print "Location:
     http://localhost/cgi-bin/c12ex3b.html\n\n";
}

if ($Rate == "") {
      print "Location:
     http://localhost/cgi-bin/c12ex3b.html\n\n";
}

[download]
It is better if the two later (for $Sales and $Rate) is used with elsif instead of if. In that case the script won't process any further elsif or else if any of them applies.

In reply to Re: HTTP headers and redirection by Kalaspuff
in thread HTTP headers and redirection by student

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