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cash_register.php
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cash_register.php
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<?
Class cashRegister {
public $change;
public $remainder;
}
function testCurrency($money, $currency, $currency_value, $change) {
if ($money/$currency_value >= 1) {
$ct = floor($money/$currency_value);
array_push($change,$currency);
$money = round($money - $ct*$currency_value,2);
}
$cash_reg = new cashRegister();
$cash_reg->remainder = $money;
$cash_reg->change = $change;
return $cash_reg;
}
function change($money) {
$change = array();
$remaining = $money;
if ($money < 0) {
return "ERROR";
} elseif ($money == 0) {
return "ZERO";
} else {
$cash_reg = testCurrency($remaining, 'ONE HUNDRED', 100, $change);
$cash_reg = testCurrency($cash_reg->remainder, 'FIFTY', 50, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'TWENTY', 20, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'TEN', 10, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'FIVE', 5, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'TWO', 2, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'ONE', 1, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'HALF DOLLAR', .50, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'QUARTER', .25, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'DIME', .10, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'NICKEL', .05, $cash_reg->change);
$cash_reg = testCurrency($cash_reg->remainder, 'PENNY', .01, $cash_reg->change);
}
$change = $cash_reg->change;
sort($change);
return implode(",", $change);
}
$fh = fopen($argv[1], "r");
while (!feof($fh)) {
$test = trim(fgets($fh));
if ($test != "") {
$args = explode(";", $test);
echo change($args[1]-$args[0]) . "\n";
}
}
fclose($fh);
?>