#include <iostream>
#include <iomanip>
#include <cstdlib>
using namespace std;

//Output the 12 elements of the array, and the subscript of each element,
//with a for loop.

int main()
{
	const 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
	};

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

	for (int i {0}; i < n; ++i) {
		cout << setw(2) << i + 1 << "   " << a[i] << "\n";
	}

	return EXIT_SUCCESS;
}