#include <iostream> #include <string> using namespace std; class P {    public:     int id;     string name;
   public:     P() { cout << "wu can p gou zao " << endl; }
    P(int id, string name) { cout << "you can p gou zao" << endl; }     P(const P &p) { cout << "p de 拷贝构造函数" << endl; } };
class Person {    public:     int id2 = 202;     int id1 = 201;     P p;
   public:     Person() { cout << "person gou zao " << endl; } };
int main(int argc, char const *argv[]) {     Person p1;     // 默认情况下，会调用自定义类型属性的拷贝构造函数     Person p2 = p1;     return 0; }