关于c++中的重载问题

Question

#include<iostream>
using namespace std;
class Animal {

};
class Bird :public Animal {

};

class A {
public:
    
    virtual void get(Bird bird) { cout << "bird" << endl; }
};
class B :public A {
public:
    virtual void get(Animal animal) { cout << "animal" << endl; }
};
class C {
public:
    void get(Animal animal) { cout << "animal" << endl; }
    void get(Bird bird) { cout << "bird" << endl; }
    
};
int main() {
    
    Animal animal;
    Bird bird;
    B* b = new B();
    A* a = b;
    a->get(bird);
    b->get(bird);
    b->get(animal);
    C c;
    c.get(bird);
    c.get(animal);
}

代码运行的结果是

bird

animal
animal

bird
animal

用基类指针a去调用函数get(bird)，结果是bird，说明派生类B中的get(animal)应该是重载关系，但为什么用指针b去调用get(bird)和get(animal)得到的结果都是animal呢？

Answer 1

可以看我的文章，哈哈哈