Re^2: reprompt user input, until validation pass

$ip_no = $ARGV[0];
chomp($ip_no);
print "$ip_no\n";
$flag=0;
while(!$flag)
{
 if($ip_no =~ /\D/ || $ip_no=~ //)
 {
  print "enter number\n";
  $ip_no=<STDIN>;
  chomp($ip_no);
 }
 else
 {
  if ($ip_no%2 ==0)
  {
   print "well done bye bye\n";
   $flag=1;
  }
  else
  {
   print "u r expected to enter an odd number\n";
   $ip_no=<STDIN>;
   chomp($ip_no);
  }
 }
}
[download]

Comment on Re^2: reprompt user input, until validation pass Download Code

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Re^3: reprompt user input, until validation pass by jwkrahn (Abbot) on Oct 17, 2011 at 10:45 UTC
`if($ip_no =~ /\D/ \|\| $ip_no=~ //)` [download] That is the same as saying: `if($ip_no =~ /\D/ \|\| $ip_no=~ /\D/)` [download] Because an empty match operator uses the last successfully matched regular expression.	[reply] [d/l] [select]
Re^4: reprompt user input, until validation pass by ansh batra (Friar) on Oct 18, 2011 at 04:43 UTC
replace `-- if($ip_no =~ /\D/ \|\| $ip_no=~ //) ++ if($ip_no =~ /\D/)` [download]	[reply] [d/l]
Re^3: reprompt user input, until validation pass by ganeshfriends (Initiate) on Oct 17, 2011 at 09:27 UTC
snippet keep on asking enter number, not continuing further, even i tried to pass argument while executing script.	[reply]