C++11新特性——1.4-1.5 final和override-526互联

1.4 final

总结：

1. final 限制某个类不能被继承，或限制某个虚函数不能被重写

2. final 修饰虚函数或者类

3. final 关键字写到虚函数或类后面

class Base
{
public:
    virtual void test()
    {
        cout << "Base class...";
    }
};

class Child : public Base
{
public:
    void test() final   // ★★★
    {
        cout << "Child class...";
    }
};

class GrandChild final: public Child    // ★★★
{
public:
    // 语法错误, 不允许重写
    //void test()
    //{
    //    cout << "GrandChild class...";
    //}
};