cpp/object_oriented/why_destructor_be_virtual

[giscus[bot]]

cpp/object_oriented/why_destructor_be_virtual

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https://csguide.cn/cpp/object_oriented/why_destructor_be_virtual.html

[HeatDeathOfUniverse]

class Base {
public:
    virtual ~Base() {
        std::cout << "Base destructor called." << std::endl;
    }
};

class Derived : public Base {
public:
    ~Derived() {
        std::cout << "Derived destructor called." << std::endl;
    }
};

int main() {
    Base* ptr = new Derived();
    delete ptr; 
    return 0;
}

这段代码派生类析构函数没有加 virtual 真的会调用派生类的析构函数吗？不应该只调用基类的构造函数吗？

[HeatDeathOfUniverse]

派生类会继承基类的虚属性，所以不需要显式声明

[huangjiawei128]

Effective C++条款07

[huangjiawei128]

另外，条款09：绝不在构造和析构过程中调用virtual函数