範例

class BaseA { ... };
class BaseB : public BaseA { ... };
class BaseC : public BaseA { ... };

class Derived: public BaseB, public BaseC {
public:
void fnc(){}
};


解決方案
絕不直接繼承多個類別。

class BaseA { ... };
class BaseB : public BaseA { ... };
class BaseC : public BaseB { ... };

class Derived: public BaseC {
public:
void fnc(){}
};