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);
 };

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^^^^^^^^^^^^^^
  }
 }

No match for 'operator=' on the line 'yieldCurve[i] = new Treasury(treasuries[i]);'