Day 4: Class vs. Instance.cpp

#include <iostream>
using namespace std;

class Person{
    public:
        int age;
        Person(int initialAge);
        void amIOld();
        void yearPasses();
    };

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

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

    void Person::yearPasses(){
       age ++ ; 
    }
int main(){
    int t;
	int 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;
}