#include <iostream>
#include <cstdlib>
#include <string>   //for class string
using namespace std;

int main()
{
	const string a[] {
		"",	                      //dummy element has subscript 0
		"A partridge in a pear tree", //so that this element will be 1
		"Two turtledoves",            //and this one will be 2
		"Three French hens",          //etc.
		"Four colly birds",
		"Five golden rings"           //and this one will be 5
		"Seven swans a-swimming",
                "Eight maids a-milking",
                "Nine ladies dancing",
                "Ten lords a-leaping",
                "Eleven pipers piping",
                "Twelve drummers drumming" 			      //
	};


	const size_t ndays {size(a)-1};       //Don't count the dummy.

	for (int day {1}; day <= ndays; ++day) {
		cout << "On the " << day << " day of Christmas\n"
			<< "My true love gave to me\n";

		for (int gift {day}; gift >= 1; --gift) { 
			cout << "\t" << a[gift] << "\n";   //indent with a tab
		}

		cout << "\n";   //Skip a line after each day.
	}

	return EXIT_SUCCESS;
}