#!/usr/bin/perl -w

use strict;

#cash register and print receipt program

my (@items, %qty, %price);

#User input here

print "Please enter your first and last name\n";
chomp (my $name = <STDIN>);

print "Please enter your state sales tax in percentage (i.e. 7.75)\n";
chomp (my $tax = <STDIN>);
my $taxrate = $tax / 100;

# enter loop to capture customer information here

my $continue='Y';
while ($continue eq 'Y'){
    print "Please enter an item or product name\n";
    chomp (my $itemname = <STDIN>);
    push @items, $itemname;
    
    print "Please enter the quantity of the item\n";
    chomp (my $itemquantity  = <STDIN>);
    $qty{$itemname} = $itemquantity;
    
    print "Please enter the price of the item (no \$ please)\n";
    chomp (my $itemprice = <STDIN>);
    $price{$itemname} = $itemprice;
    
    print "Would you like to add another item? - Y or N\n";
    chomp ($continue = <STDIN>);
}

# process subtotal and print receipt output  here

my $subtotal;
foreach my $item (@items) {
    print "Item: $item\n";

    #$q_item = $qty{$item};
    print "Quantity: $qty{$item}\n";

    #$p_item = $price{$item};
    print "Price: \$$price{$item}\n";

    my $itemtotal = $qty{$item} * $price{$item};
    print "Item total: \$$itemtotal\n";

    $subtotal += $itemtotal;
    print "Your current subtotal is: \$$subtotal\n";
}

#print totals and tax here

print "Purchase Subtotal: $subtotal\n";

print "Sales Tax Rate: $tax\n";

my $totaltax = $subtotal * $taxrate;
print "Total Sales Tax = \$$totaltax\n";

my $totalamount = $subtotal + $totaltax;
print "The total amount of this sale is: \$$totalamount\n";

#print the customer name and current date and time

print "\n";
print "Customer: $name\n";

print "\n";
my $now = localtime time;
print "Current Date and Time: $now\n";

##</code><code>##

    print "Would you like to add another item? - Y or N\n";
    chomp ($continue = <STDIN>);

##</code><code>##

    $continue = some invalid value;
    while ($continue is not a valid value) {
      print out the prompt;
      chomp ($continue = <STDIN>); # unchanged.
    }