物件102-1

#include <iostream>
#include <string>
using namespace std;

class Person{
public:
    Person(string n, int a);
    Person(){}
    void Print() const;

private:
    const string name;
    int age;

};

Person::Person(string n, int a):name(n){
    age = a;
}

void Person::Print() const{
    cout << name << " is " << age << " years old. " << endl;
}

int main()
{
    Person p1("John", 15);
    const Person p2("Mary", 13);
    Person p3;

    p1.Print();
    p2.Print();
}