Write an expression or perl script to identify the entered
ip address is valid or not?
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Answer Posted / anil
The first reply won't match 192.168.99.99. [0-5] matches
only 0,1,2,3,4,5. How about the other numbers?
Second one is almost correct, but the first octet can't be
'0'. I mean, 0.1.2.3 is not a valid address.
print "Enter an ip address: ";
$ans=<stdin>;
chomp($ans);
if ($ans =~ m/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/)
{
if ( ($1>0) && ($1<=255) && ($2<=255) && ($3<=255) &&
($4<=255))
{
print "An IP Address";
}
else
{
print "Not an IP Address";
}
}
else
{
print "Not an IP Address";
}
| Is This Answer Correct ? | 2 Yes | 1 No |
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