派生类构造函数中调用基类虚函数，能够发生多态？-（否）

最新推荐文章于 2023-02-27 15:57:52 发布

myflyinsky

最新推荐文章于 2023-02-27 15:57:52 发布

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分类专栏： C/C++ 文章标签：构造函数多态 VPTR指针

本文链接：https://blog.youkuaiyun.com/liusaoren/article/details/79385591

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#include<iostream>
using namespace std;


class A{
public:
    A(int a) :a(a)
    { 
        cout << "constructor A :" << a << endl;
        test1();
        test2();
    }


    void test1(){ cout << "Class A :" << a << endl; }
    virtual void test2(){ cout << "Class A Virtual:" << a << endl; }


protected:
    int a;
};


class B :public A{
public:
    B(int b) :A(b)
    { 
        cout << "constructor B :" << a << endl;
        test1();
        test2();
    }


    void test1(){ cout << "Class B :" << a << endl; }
    void test2(){ cout << "Class B Virtual:" << a << endl; }
};


int main()
{
    cout << "==========0=========" << endl;
    A a(10);
    cout << "=====&#