Ham con trỏ

int* printPolinomial ()
{
	int n;
	struct Polinomial
	{
		int heso;
		int bac;
	};
	Polinomial *dathuc;
	cout << "\n nhap bac cua da thuc: ";
	cin >> n;
	dathuc = new (Polinomial*) [n+1];
	for( int i = 0; i<=n+1; i++ )
	{
		cout << "\n nhap phan tu thu: " << i;
		cin >> dathuc[i].heso;
		cout << "\n nhap bac cua phan tu: ";
		cin >> dathuc[i].bac;
	}
	return dathuc ;
}