如何從父類調用函數？

Question

我想在C++中調用父類（父類）的繼承函數。
這怎麼可能？

class Patient{ 
protected: 
    char* name; 
public: 
    void print() const; 
} 
class sickPatient: Patient{ 
    char* diagnose; 
    void print() const; 
} 

void Patient:print() const 
{ 
    cout << name; 
} 

void sickPatient::print() const 
{ 
    inherited ??? // problem 
    cout << diagnose; 
} 

Answer 1

void sickPatient::print() const 
{ 
    Patient::print(); 
    cout << diagnose; 
} 

而且還如果你想多態行爲，你不得不在基類打印virtual：

class Patient 
{ 
    char* name; 
    virtual void print() const; 
} 

在這種情況下，你可以這樣寫：

Patient *p = new sickPatient(); 
p->print(); // sickPatient::print() will be called now. 
// In your case (without virtual) it would be Patient::print()