#include <iostream>
#include <iomanip>   //for the iomanipulator setw (stands for "set width")
#include <cstdlib>
using namespace std;

//A "range for loop" gives you access to all the values in one array,
//but only in the order in which they are stored in the array.
//It gives you no access to the subscript of each value.
//
//The variable monthLength is automatically of data type int,
//because a is an array of ints.

int main()
{
	int a[] {
		31,	// 0 January
		28,	// 1 February
		31,	// 2 March
		30,	// 3 April
		31,	// 4 May
		30,	// 5 June
		31,	// 6 July
		31,	// 7 August
		30,	// 8 September
		31,	// 9 October
		30,	//10 November
		31	//11 December
	};

	int n {size(a)};   //number of elements in the array

	for (int i {0}; i < n; ++i) {
		cout << setw(2) << i << "   " << a[i] << "\n";
	}

	cout << "\n";                        //Skip a line between the loops.

	for (auto monthLength: a) {          //This is a "range for loop".
		cout << monthLength << "\n";
	}

	return EXIT_SUCCESS;
}