C++成员变量指针

#include<iostream>
class Test
{
public:
    int a;
    int b;
};
int main()
{
    Test t;
    t.a = 10;
    int Test::* varsa = &Test::a;
    int Test::* varsb = &Test::b;
    std::cout<<t.*varsa<<std::endl;
    return 0;
}

// 输出
// 10

引自：https://blog.youkuaiyun.com/rubikchen/article/details/89927392