// ΛΥΣΕΙΣ ΘΕΜΑΤΩΝ ΙΟΥΝΗ 2016

// ΘΕΜΑ 4.
#include <iostream>
#include <string>
#define NMAX 35
using namespace std;
#define FOR(i,start,end)   for (int i=start; i < end; i++)

class Student{
	private:	
		string onoma, eponymo;
		unsigned int AM;
		// NMAX is a macro defined above 		
		float grades[NMAX];
	public:		
		Student(string onom, string epon, int am){
			onoma = onom;
			eponymo = epon;
			AM = am;
			//the following loop
			//for (int i = 0; i < NMAX; i++) grades[i] = 0.0;
			//can been substituted by the macro defined above
			FOR(i, 0, NMAX) grades[i] = 0.0;
		}

		// copy constructor
		Student(const Student &st){
			onoma = st.onoma;
			eponymo = st.eponymo;
			AM = st.AM;			
			FOR(i, 0, NMAX) grades[i] = st.grades[i];
		}

		~Student() {
			cout << "Διαγραφή !\n";
			cout << "Όνομα:" << onoma << "\n";
			cout << "Επώνυμο:" << eponymo << "\n";
			cout << "AM:" << AM << "\n\n";
			//cout << "Μάθημα" << "--" << "Βαθμός\n";
			//FOR(i, 0, NMAX) cout << i << "  " << grades[i] << "\n"; "
		}

		void set(int mathima, float grade){
			grades[mathima] = grade;
		}

		bool test(float grades[]){
			int cpass = 0;	
			FOR(i,0,NMAX) {
				if (grades[i] >= 5) cpass++;
			}			
			return (cpass == NMAX); // αν cpass == 35 τότε True, αλλιώς False
		}

		float mo_grades(){
			float sum = 0.0;
			FOR(i,0,NMAX) {
				if (this->grades[i] >= 5) sum += this->grades[i];
			}
			return sum/float(NMAX);
		}

		bool operator== (const Student &stu){
			if (onoma == stu.onoma && eponymo == stu.eponymo && AM == stu.AM){				
				FOR(i, 0, NMAX){
					if (grades[i] != stu.grades[i]) return false;
				}
				return true;
			}
			else return false;
		}

		friend void print(Student); // τώρα η print() έχει πρόσβαση στις μεταβλητές κ' συναρτήσεις της Student
};

void print(Student s){
		cout << "Όνομα: " << s.onoma << "\n"
			 << "Επώνυμο: " << s.eponymo << "\n"
			 << "AM: " << s.AM << "\n"
			 << "Μάθημα" << "--" << "Βαθμός\n";
		FOR(i, 0, NMAX) cout << i << "  " << s.grades[i] << "\n"; 
		cout << "Μέσος όρος: " << s.mo_grades() << "\n";
}

int main(){
	Student s1("Kostas","Mixos",1050333), s2("Mike","Lamar",1050111), *s3 = new Student("Maria","Pentagioth",1050222);

		s1.set(1,7.5); s1.set(2,7); s1.set(3,8);
		s2.set(1,6.0); s2.set(2,3.0); s2.set(3,7.0);
		s3->set(1,5.0); s3->set(2,9.0); s3->set(3,8.0);

	// Παράδειγμα χρήσης του τελεστή ==	
	if (s1==s2) cout "true\n";
	
	
	cout << s1.mo_grades() << endl;
	cout << s2.mo_grades() << endl;
	cout << s3->mo_grades() << endl;

	// Προτιμώ να ελευθερώσω την μνήμη καλώντας τον καταστροφέα
	//delete s3;
	s3->~Student();      
	return 0;
}