---

#include <iostream>
#include <list>

using namespace std;

int main() {

	// 305 42 68
	//int x, y, z;
	//cin >> x >> y >> z;

	// ------------------------------
	// ARRAYS: FIXED SIZE -- accessible by index
	// ------------------------------
	const int NUM_GRADES = 5;
	char grades [NUM_GRADES] = {'A', 'B', 'C', 'D', 'F'};

	for (int i=0; i < NUM_GRADES; ++i) {
		cout << grades[i] << " ";
	}
	cout << endl;

	for (int i=NUM_GRADES-1; i >= 0; --i) {
		cout << grades[i] << " ";
	}
	cout << endl;

	int scores [5] = {1, 2, 3, 4, 5};
	int sum = 0;
	for (int i=0; i < 5; ++i) {
		sum += scores[i];
	}
	cout << "The sum of scores is: " << sum << endl;

	// replacing an item of an array
	grades[0] = 'E';
	for (int i=0; i < NUM_GRADES; ++i) {
		cout << grades[i] << " ";
	}
	cout << endl;

	// ------------------------------
	// LIST (doubly linked list)
	// ------------------------------
	list<int> listScores;
	for (int i =0; i < 5; ++i) {
		listScores.push_front(i);
		listScores.push_back(i);
	}

	// access by an iterator
	for (list<int>::iterator it=listScores.begin(); it != listScores.end(); ++it) {
		cout << *it << " ";
	}
	cout << endl;

	// access using range based for loop
	for (auto const& i : listScores) {
		cout << i << " ";
	}
	cout << endl;

	return 0;
}