C++如何将std :: vector <Derived*>类型的指针设置为std :: vector <Base*>类型的对象

#include<iostream>
#include<vector>

class Base {
public:
    virtual void print() {
        std::cout << "Base class print function"<< std::endl;
    }
};

class Derived : public Base {
public:
    void print() override {
        std::cout << "Derived class print function"<< std::endl;
    }
};

int main() {
    std::vector<Base*> base_vector;
    std::vector<Derived*> derived_vector;

    Base* base_ptr = new Base();
    Derived* derived_ptr = new Derived();

    base_vector.push_back(base_ptr);
    derived_vector.push_back(derived_ptr);

    // 将std::vector<Derived*>类型的指针设置为std::vector<Base*>类型的对象
    for (auto ptr : derived_vector) {
        base_vector.push_back(ptr);
    }

    // 调用基类和派生类的print函数
    for (auto ptr : base_vector) {
        ptr->print();
    }

    // 释放内存
    for (auto ptr : base_vector) {
        delete ptr;
    }

    return 0;
}