Inheritance C++；结构继承项系统

我正在尝试为一个辅助项目创建一个项目系统，并且正在测试结构中的继承。这并没有给我预期的结果：

struct Item
{
  int price;
  int id;
};

struct Iron : Item
{
  int price = 10;
  int id = 1;
};

struct Gold : Item
{
  int price = 15;
  int id = 2;
};

int main() 
{
  std::cout << "Hello World!\n";
  Item testItem = Iron();
  std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
  testItem = Gold();
  std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
}

---

<> P> >在C++中不允许重写成员变量< < /P> 当您声明

Iron:：price

时，您会在其中隐藏

Item:：price

这样做：

struct Item
{
    int price;
    int id;
};

struct Iron : Item
{
    Iron() {price = 10, id = 1; }
};

struct Gold : Item
{
    Gold() { price = 15, id = 2; }
};

int main()
{
    std::cout << "Hello World!\n";
    Item testItem = Iron();
    std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
    testItem = Gold();
    std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
}

struct项
{
国际价格；
int-id；
};
结构铁：项目
{
Iron（）{price=10，id=1；}
};
结构黄金：项目
{
Gold（）{price=15，id=2；}
};
int main（）
{
标准：：cout
struct Item
{
    int price;
    int id;
};

struct Iron : Item
{
    Iron() {price = 10, id = 1; }
};

struct Gold : Item
{
    Gold() { price = 15, id = 2; }
};

int main()
{
    std::cout << "Hello World!\n";
    Item testItem = Iron();
    std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
    testItem = Gold();
    std::cout << "Item price: " << testItem.price << ", Item ID: " << testItem.id << std::endl;
}