c ++类继承和运算符重载; 运算符重载是否继承？

class Base {
public:
    int value;
    Base(int v) : value(v) {}
    Base operator+(const Base& other) const {
        return Base(value + other.value);
    }
};

class Derived : public Base {
public:
    Derived(int v) : Base(v) {}
    // 手动重载运算符
    Derived operator+(const Derived& other) const {
        return Derived(value + other.value);
    }
};