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open my $filehandle, '>>', 'C:\Documents and Settings\m\Desktop\info.t
+xt'

foreach my $key (qw/name Specialization age/){
    print "enter your $key\n";
...
    chomp $info{$key}; # get rid of the EOL
    print $filehandle "$key: $info{$key}\n";
}

    while (<>) {
        ...                     # code for each line
    }

    unshift(@ARGV, '-') unless @ARGV;
    while ($ARGV = shift) {
...
            ...         # code for each line
        }
    }