C++程序设计POJ》《WEEK6 多态与虚函数》《编程填空》

Posted 2022-02-19 focus-z

#include <iostream>

using namespace std;

class A 

public:

    A()  

    virtual void func()

    
        cout << "A::func" << endl;
    

    virtual void fund()

    
        cout << "A::fund" << endl;
    

    void fun()

    
        cout << "A::fun" << endl;
    

;

class B :public A 

public:

    B()  func(); 

    void fun()  func(); 

;

class C : public B 

public:

    C()  

    void func()

    
        cout << "C::func" << endl;
    

    void fund()

    
        cout << "C::fund" << endl;
    

;

int main()



    A * pa = new B();

    pa->fun(); pa->fun(); // 不是多态，调用普通函数

    B * pb = new C();

    pb->fun();
    while (1);
    return 0;

//A::func

//A::fun

//A::func

//C::func