#include<iostream>
using namespace std;
class person{
public:
	person(int age){
		this->age = age;
	}
	person& appperson( person &age){
		this->age += age.age ;
		return *this;
	}
	int  age;
	
};
void test(){
	person p(20);
	person p2(20);
	p2.appperson(p).appperson(p).appperson(p);
	cout << "年龄为" << p.age << endl;
	cout << "年龄为" << p2.age  << endl;
}
int main(){
	test();
	return 0;
}