类组合构造函数d必须显式初始化引用成员

我真的被这个问题困住了。所以基本上我有一个Stock班级和一个班级BuyOrder。BuyOrder班级将Stock班级作为成员，以便知道要购买的股票。创建股票后，它将使用公司名称并使用随机价格进行初始化。然后，我可以创造一个买入定单发生在bidPrice，bidQuantity，Stock的参数。

在mainI中，我想创建一个BuyOrder存储订单的数组。然后，每次用户创建订单时，都可以存储该订单。

我的第一种方法是声明BuyOrder buyList[100]。这样，每次用户创建订单时，我都可以使用set函数设置每个订单，buyList[i]然后递增i。但是，当我BuyOrder buyList[100]在中声明时main。它说No matching constructor for initialization of 'BuyStock buyList[100]'我回去BuyOrder.cpp尝试添加默认的构造函数，BuyOrder::BuyOrder(){}然后显示错误：Constructor for 'BuyOder'must explicitly initialize the reference member 'buyStock'。

我不知道如何从这里继续。非常感谢。

下面是BuyOrder.cpp的一部分，因为它太长了，其余部分仅是函数定义。

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

void BuyOrder::setBuyStock(Stock stock){
    buyStock = stock;
}

void BuyOrder::setBuyOrderPrice(double price) {
    buyPrice = price;
}

void BuyOrder::setBuyOrderQuantity(int quantity) {
    buyQuantity = quantity;

以下是BuyOrder.h

#ifndef BUYORDER_H
#define BUYORDER_H
#include <ctime>
#include<iostream>
#include "Stock.h"


class BuyOrder {
    friend void getCurrentTime();

public:
    BuyOrder(double , int , Stock & );

    void setBuyStock(Stock);
    void setBuyOrderPrice(double price);
    void setBuyOrderQuantity(int quantity);

    double getBuyOrderPrice();
    int getBuyOrderQuantity();

    void placeBuyOrder();
    void checkExcute();

    void modifyBuyOrder();
    void cancelBuyOrder();

    double getHighestBidPrice();
    int getHighestBidPriceQuantity();

    double getLowestBidPrice();
    int getLowestBidPriceQuantity();

private:
    double buyPrice;
    int buyQuantity;
    bool excute = false;
    Stock &buyStock;
    time_t t;

};
#endif

这是Stock.h

#ifndef STOCK_H
#define STOCK_H
#include <vector>
#include <string>
using namespace std;

class Stock {

    friend void getCurrentTime();


public:
    Stock();
    Stock(string nameOfCompany);

    int getBidTerms();
    int getAskTerms();
    void printStockInfo();
    void initialize();
    void sortBid();
    void sortAsk();

    string nameOfCompany;
    string currentTime;

    vector<double> askPrice;
    vector<int> askQuantity;

    vector<double> bidPrice;
    vector<int> bidQuantity;

    int bidTerm;
    int askTerm;

};
#endif

这是Stock.cpp，不包括长函数定义

#include "Stock.h"
#include <iostream>
#include <vector>
#include <time.h>
#include <iomanip>
#include <ctime>
#include <random>
#pragma warning(disable : 4996)
using namespace std;


void getCurrentTime() {

    time_t rawTime;
    struct tm * timeinfo;

    time(&rawTime);
    timeinfo = localtime(&rawTime);
    cout << asctime(timeinfo);
}

Stock::Stock(){}

Stock::Stock(string companyName) :nameOfCompany{ companyName } {
    initialize();
    sortBid();
    sortAsk();
}