#!/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.

##</code><code>##

Entrez votre ip :21.23
11
[]
[2]
[]
[1]
[]
[.]
[]
[2]
[]
[3]
[
]

##</code><code>##

Entrez votre ip :21.23
3
[21]
[.]
[23
]

##</code><code>##

#!/usr/bin/perl
print "Entrez votre ip :";
$ip=<STDIN>;
@t=split(/[.\n]/,$ip); # Don't need \. for period in [ ]
print scalar @t,"\n";
print "[$_]\n" for @t;

##</code><code>##

Entrez votre ip :21.23
2
[21]
[23]