#!/perl/bin/perl

# !!!! Especially when learning, you should use these:
use strict;
use warnings;


sub adduser{
    print "\nI am in the adduser array now";
}

#create the array
my @data = (
  { query => 'First Name',},
# !!!! Removed "{ query => 'Firt Name', },"
  { query => 'School', },
  { query => 'Phone', },
  { query => 'Position', },
  { query => 'Role', },
);


MAIN_LOOP:
while (1) {

#greeting
  system("cls");
  print "iT For Dominica User Database:\n",
        "Enter the Number then enter the value.\n";
        
#number the amt of items in list
  # !!!! Much easier to read:
  for my $i (0 .. $#data)
  {
    print "\t",
          $i+1, ". ",
          $data[$i]{query}, ": ",
          $data[$i]{value} || "",
          "\n";
  }
  print "\t0. Done\n";


  # !!!! Added loop to simplify error handling.
  foreach ('once') {
    print "Type a number to choose to change: ";
    my $number = <STDIN>;
    chomp($number);
  
    if ($number eq "" || $number eq "0") {
       last MAIN_LOOP;
    }

    # !!!! Make sure it's a number!
    # !!!! Removed hardcoded "6".
    if ($number =~ /[^0-9]/ ||
        $number > @data
    ) {
      print("Bad input!");
      redo; # Ask again.
    }
  }

  --$number;

  print "\n\nPlease enter your ", $data[$number]{query}, ": ";
  chomp($data[$number]{value} = <STDIN>);
}

# !!!! Still don't know what this adduser stuff is suppose to do.

# !!!! Cleaned up this loop.
foreach my $field (@data) {
  my $query = $field->{query};
  my $value = $field->{value};
  if (defined($field->{value}) && $field->{value} ne "") {
     print("$query: $value\n");
  }
}