c++ 重载成员函数的地址如何获取

直接看例子

#include <iostream>
using namespace std;
class Obj_Player
{
public:
    virtual int Sum()
    {
        return 1;
    }
    virtual int Sum(int a)
    {
        return 2;
    }
};
int main()
{
    Obj_Player b;
    int (Obj_Player:: * Func1)() = (int (Obj_Player::*)())(&Obj_Player::Sum);
    (b.*Func1)();
    int (Obj_Player:: * Func2)(int) = (int (Obj_Player::*)(int))(&Obj_Player::Sum);
    (b.*Func2)(444);
}