Day_04 Class_vs_Instances.cpp

#include<iostream>
using namespace std;

class Person
{
public :
    int age;

    Person(int initialAge)
    {
        if(initialAge < 0)
        {
            age = 0;
            cout << "Age is not valid, setting age to 0.\n";
        }

        age = initialAge;
    }

    void amIOld()
    {
        if(age < 13)
            cout << "You are young.\n";
        else if(age >= 13 && age < 18)
            cout << "You are a teenager.\n";
        else
            cout << "You are old.\n";
    }

    void yearPasses()
    {
        age++;
    }
};

int main()
{
    int t,age;
    cin >> t;

    for(int i=0; i<t ; i++)
    {
        cin >> age;
        Person p(age);
        p.amIOld();

        for(int j=0; j<3; j++)
            p.yearPasses();

        p.amIOld();

        cout << "\n";
    }

    return 0;
}