如何将指向派生类的指针存储在声明为指向基类的指针的实例变量中？

#include <iostream>

class Base {
public:
    virtual void print() {
        std::cout << "This is the base class." << std::endl;
    }
};

class Derived : public Base {
public:
    void print() override {
        std::cout << "This is the derived class." << std::endl;
    }
};

int main() {
    Base* basePtr;
    Derived* derivedPtr = new Derived();
    
    basePtr = derivedPtr; // 将指向派生类的指针赋值给指向基类的指针
    
    basePtr->print(); // 调用派生类的重写函数
    
    delete derivedPtr;
    
    return 0;
}

This is the derived class.