#include<iostream>
using namespace std;

class Student
{
private:
	const int nrStud;
	int nrNote = 0;
	int* note = NULL;
public:
	static int nrPctCredit;
	Student(const int nrStud) :nrStud(nrStud)
	{
	}
	Student(const int nrStud, int* note, int nrNote) :nrStud(nrStud)
	{
		this->note = new int[nrNote];
		for (int i = 0; i < nrNote; i++)
			this->note[i] = note[i];
		this->nrNote = nrNote;
	}
	Student(const Student& s) :nrStud(s.nrStud)
	{
		this->nrNote = s.nrNote;
		this->note = new int[s.nrNote];
		for (int i = 0; i < s.nrNote; i++)
			this->note[i] = s.note[i];
	}
	void setNote(int* note, int nrNote)
	{
		this->nrNote = nrNote;
		this->note = new int[nrNote];
		for (int i = 0; i < nrNote; i++)
			this->note[i] = note[i];
	}
	int getNrNote()
	{
		return this->nrNote;
	}
	int getNrStud()
	{
		return this->nrStud;
	}
	int getNota(int index)
	{
		return note[index];
	}
	Student& operator=(const Student& s)
	{
		nrNote = s.nrNote;
		if (note != NULL)
			delete[] note;
		note = new int[s.nrNote];
		for (int i = 0; i < s.nrNote; i++)
			note[i] = s.note[i];
		return *this;

	}
	bool estePromovat(int nrPctCredit)
	{
		if (nrPctCredit > 14)
			return true;
		else
			return false;
	}
	explicit operator float()
	{
		float medie = 0;
		for (int i = 0; i < nrNote; i++)
			medie = medie + note[i];
		if (nrNote > 0)
			return medie / nrNote;
		else
			return 0;
	}
	Student operator++(int)
	{
		int* copy = new int[nrNote];
		for (int i = 0; i < nrNote; i++)
			copy[i] = note[i];
		nrNote++;
		delete[] note;
		note = new int[nrNote];
		for (int i = 0; i < nrNote - 1; i++)
			note[i] = copy[i];
		note[nrNote - 1] = note[nrNote - 2];
		delete[] copy;
		return *this;
	}
	~Student()
	{
		delete[] note;
	}

};

int Student::nrPctCredit = 3;

bool operator==(Student s1, Student s2)
{
	int n1 = 0, n2 = 0;
	for (int i = 0; i < s1.getNrNote(); i++)
		if (s1.getNota(i) >= 5)
			n1++;
	for (int i = 0; i < s2.getNrNote(); i++)
		if (s2.getNota(i) >= 5)
			n2++;
	return n1 == n2;
}

void operator<<(ostream& out, Student& s)
{
	out << "Studentul cu codul " << s.getNrStud() << " are " << s.getNrNote() << " note: ";
	for (int i = 0; i < s.getNrNote(); i++)
		out << s.getNota(i) << " ";
}

int main()
{
	Student s1(102);
	cout << s1.getNrNote() << endl;
	int note[] = { 10, 7, 8, 10, 4 };
	Student s2(104, note, 5);
	cout << s2.getNrNote() << endl;
	Student s3 = s2;
	cout << s3.getNrStud() << endl;
	int note2[] = { 5, 5, 4, 10 };
	s1.setNote(note2, 4);
	cout << s1.getNrNote() << endl;
	Student::nrPctCredit = 4;
	s3 = s1;
	bool promovat = s3.estePromovat(15);
	if (promovat)
		cout << endl << "Studentul are un numar suficient de credite" << endl;
	else
		cout << endl << "Studentul nu are un numar suficient de credite" << endl;
	Student* ps1 = new Student(109);
	*ps1 = s1;
	cout << *ps1;
	delete ps1;
	float medie = (float)s1;
	cout << endl << medie << endl;

	s1 = s3++;
	cout << endl;
	cout << s1;
	cout << endl;
	cout << s3;
	cout << endl;
	if (s1 == s3)
		cout << "Studentul 1 are acelasi numar de note de trecere ca studentul 3";
	else
		cout << "Studentul 1 nu are acelasi numar de note de trecere ca studentul 3";
}