虚函数习题复习

#include <iostream>

using namespace std;

class Base {
public:
    virtual void VirtualFunc() { cout << "Base virtual" << endl; }
    void NonVirtualFunc() { cout << "Base non-virtual" << endl; }
};

class Derived : public Base {
public:
    void VirtualFunc() { cout << "Derived virtual" << endl; }
    void NonVirtualFunc() { cout << "Derived non-virtual" << endl; }
};

int main(int argc, char *argv[])
{
    Base base;
    Derived derived;
    Base *dPtr = &derived;
    Base *bPtr = &base;
    Derived *ptr = static_cast<Derived *>(&base);
    ptr->VirtualFunc();
    ptr->NonVirtualFunc();


    dPtr->VirtualFunc();
    dPtr->NonVirtualFunc();
    bPtr->VirtualFunc();
    bPtr->NonVirtualFunc();
    return 0;
}

输出：

Base virtual

Derived non-virtual

Derived virtual

Base non-virtual

Base virtual

Base non-virtual

总结一句话：虚函数是谁的就是谁的，非虚函数转换成谁的就是谁的。