static void Main(string[] args)
{
OrderService one = new OrderService();
Order first = new Order("bread", 100, 10000, "yunianlin", "001");//参数依次为：商品名称，数量，价格，买家姓名，订单号
Order second = new Order("milk", 10, 100000, "yu", "030");
Order third = new Order("cake", 20, 200000, "wang", "059");
one.setList(first);//添加订单
one.setList(second);
one.setList(third);
one.showList(1); //输入位置值，展示订单
one.findOrder("yunianlin"); //查询订单,输入买家名得到位置值
one.findOrder("milk"); //查询订单，输入商品名得到位置值
one.findMoney(10000); //查询订单，输入价格，得到大于该价格的订单的位置值
}
