如何在继承私有值时创建复制构造函数？

#include <iostream>

class Base {
protected:
    int privateValue;

public:
    Base(int value) : privateValue(value) {}

    Base(const Base& other) : privateValue(other.privateValue) {}

    int getPrivateValue() const {
        return privateValue;
    }
};

class Derived : public Base {
public:
    Derived(int value) : Base(value) {}

    Derived(const Derived& other) : Base(other) {}
};

int main() {
    Derived d1(10);
    Derived d2(d1);

    std::cout << "d1 private value: " << d1.getPrivateValue() << std::endl;
    std::cout << "d2 private value: " << d2.getPrivateValue() << std::endl;

    return 0;
}