C错误：’operator =’不匹配

在为数组赋值时遇到问题.我有一个名为Treasury的课程.我创建了另一个名为TradingBook的类,我希望它包含一个全局的Treasury数组,可以从TradingBook中的所有方法访问.这是我的TradingBook和Treasury的头文件：

class Treasury{
public:
    Treasury(SBB_instrument_fields bond);
    Treasury();
    double yieldRate;
    short periods;
};


class TradingBook
{
public:
    TradingBook(const char* yieldCurvePath,const char* bondPath);
    double getBenchmarkYield(short bPeriods) const;
    void quickSort(int arr[],int left,int right,double index[]);

    BaseBond** TradingBook;
    int treasuryCount;
    Treasury* yieldCurve;
    int bondCount;
    void runAnalytics(int i);
};

这是我的主要代码,我收到错误：

TradingBook::TradingBook(const char* yieldCurvePath,const char* bondPath)
{
    //Loading Yield Curve
    // ...
    yieldCurve = new Treasury[treasuryCount];

    int periods[treasuryCount];
    double yields[treasuryCount];
    for (int i=0; i < treasuryCount; i++)
    {
        yieldCurve[i] = new Treasury(treasuries[i]);
        //^^^^^^^^^^^^^^^^LINE WITH ERROR^^^^^^^^^^^^^^
    }
}

我收到错误：

有什么建议？

yieldCurve[i] = new Treasury(treasuries[i]);

yieldCurve[i] = Treasury(treasuries[i]);