#include <iostream>
#include <string>

using namespace std;

class Person {
private:
    string name;
    int age;
public:
    // Constructor
    Person(string n, int a) : name(n), age(a) {}

    // Setter methods
    void setName(string n) {
        name = n;
    }

    void setAge(int a) {
        age = a;
    }

    // Getter methods
    string getName() {
        return name;
    }

    int getAge() {
        return age;
    }

    // Display method
    void displayInfo() {
        cout << "Name: " << name << ", Age: " << age << " years old" << endl;
    }
};

int main() {
    Person person1("Alice", 25);
    Person person2("Bob", 30);

    // Display initial information
    cout << "Initial Information:" << endl;
    person1.displayInfo();
    person2.displayInfo();

    // Modify and display updated information
    person1.setName("Carol");
    person1.setAge(28);
    person2.setAge(35);

    cout << "\nUpdated Information:" << endl;
    person1.displayInfo();
    person2.displayInfo();

    return 0;
}