函数已经有一个正文错误代码C2084

Question

我正在尝试使用Stock对象作为BuyOrder类的成员。当我为BuyOrder实现构造函数时，它显示函数'BuyOder :: BuyOrder（double，int，Stock）'已经有一个正文。有什么帮助吗？

 BuyOrder::BuyOrder(double price, int quantity, Stock s)
 :buyPrice{ price },
  buyQuantity{quantity},
  buyStock{s}{}

在头文件中，构造函数原型是

BuyOrder(double price, int quantity, Stock s) {}