Your code executes just fine for me; specifically I get:
user@localhost:~/sandbox$ perl script.pl
Enter a name to print it's family name :
Alis
Alis is already there, and its family name is Williams user@localhost:
+~/sandbox$
How are you attempting to interact with it?
On a side note, hashes are wonderful tools, but you are not using them to their greatest advantage. To quote a great man:
Doing linear scans over an associative array is like trying to club someone to death with a loaded Uzi. -- TimToady
Rather than what you've written, I would use code more like:
#!/usr/bin/perl -w
use strict;
my %family_name = (
"Alis" => "Williams",
"Sara" => "McAwesome",
"Serena" => "Anderson",
);
print "Enter a name to print it's family name : \n";
chomp(my $name= <STDIN>);
if (exists $family_name{$name}) {
print "$name is already there, and its family name is $family_name
+{$name} ";
} else {
print "I don't know anyone by the name $name\n";
}
See exists for info on the exists function and perldata for info on what data types (including hashes) Perl has to offer.
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