C++错误：与 'operator=' 不匹配
给数组赋值时遇到问题。我创建了一个名为 Treasury 的类。我创建了另一个名为 TradingBook 的类，我想包含一个可以从 TradingBook 中的所有方法访问的全局 Treasury 数组。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);
};
这是我收到错误的主要代码：
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：
'yieldCurve[i] = new Treasury(treasuries[i]);' 行上的'operator='不匹配
有什么建议吗？
Having a problem when assigning a value to an array. I have a class I created called Treasury. I created another class called TradingBook which I want to contain a global array of Treasury that can be accessed from all methods in TradingBook. Here is my header files for TradingBook and Treasury:
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);
};
And here is my main code where I'm getting the error:
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^^^^^^^^^^^^^^
}
}
I am getting the error:
No match for
'operator='on the line'yieldCurve[i] = new Treasury(treasuries[i]);'
Any advice?
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评论（2）
这是因为
yieldCurve[i]的类型为Treasury，而new Treasury(treasuries[i]);是一个指向Treasury对象。所以你有类型不匹配。尝试将此行：更改
为：
That's because
yieldCurve[i]is of typeTreasury, andnew Treasury(treasuries[i]);is a pointer to aTreasuryobject. So you have a type mismatch.Try changing this line:
to this:
yieldCurve是指向Treasury数组的指针，而不是Treasury*。将new删除到有错误的行，或者将其声明修改为指针数组。yieldCurveis a pointer to an array ofTreasury, notTreasury*. Drop thenewat the line with error, or modify the declaration for it to be an array of pointers.