#!/usr/bin/perl
print "Entrez votre ip :";
$ip=<STDIN>;
@t=split(/(.)/,$ip);   # Surround the delimiter in (), then the
                       # regexp matches become array elements
print scalar @t,"\n";  # Don't waste a variable
print "[$_]\n" for @t; # Surround each match by brackets,
                       # print each match on its own line.