12.30

#include 
 
using namespace std;
class Person
{
    int age;
    string &name;
public:
 
    Person(int age,string &name):age(age),name(name){}
    ~Person(){}
    Person(const Person &other):age(other.age),name(other.name){}
    Person &operator=(const Person & other)
    {
            this->age=other.age;
            this->name=other.name;
            return *this;
    }
    Person operator+(Person &other);
    bool operator==(Person &other);
    bool operator&&(Person &other);
    Person operator++();
    Person operator--(int);
    friend ostream &operator<<(ostream &out,Person &s1);
 
};
Person Person::operator+(Person &other)
{
    string *name=new string;
    Person temp(15,*name);
    temp.age=this->age+other.age;
    temp.name=this->name+other.name;
    return temp;
}
bool Person::operator==(Person &other)
{
 
    return this->age==other.age&&this->name==other.name;
}
bool Person::operator&&(Person &other)
{
 
    return this->age&&other.age;
}
Person Person::operator++()
{
    ++(this->age);
    return *this;
}
Person Person::operator--(int)
{
    Person temp(this->age,this->name);
    return temp;
}
ostream &operator<<(ostream &out,Person &s1)
{
    out<