超市计算价格

public class java1 {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入单价(￥):");

        double price = scanner.nextDouble();

        System.out.println("请输入数量：");

        double amount = scanner.nextDouble();

        System.out.println("请输入收款金额：");

        double count = scanner.nextDouble();

        double totalMoney = price*amount;

        if(totalMoney > 500){

            totalMoney = totalMoney*0.8;

        }

        double change = count - totalMoney;

        System.out.println("应收金额为："+totalMoney + "找零为："+change);

    }
}