对于不同派生类需要不同参数的函数，如何实现多态性？

#include <iostream>

class Base {
public:
    virtual void func(int param) {
        std::cout << "Base class: " << param << std::endl;
    }
};

class Derived1 : public Base {
public:
    void func(int param) override {
        std::cout << "Derived1 class: " << param << std::endl;
    }
};

class Derived2 : public Base {
public:
    void func(int param) override {
        std::cout << "Derived2 class: " << param << std::endl;
    }
};

int main() {
    Base* basePtr;
    Derived1 derived1;
    Derived2 derived2;

    basePtr = &derived1;
    basePtr->func(10);  // 调用Derived1的func函数

    basePtr = &derived2;
    basePtr->func(20);  // 调用Derived2的func函数

    return 0;
}

Derived1 class: 10
Derived2 class: 20