#include <iostream>
#include <iomanip>   //for the "i/o manipulators" setw and setprecision
#include <cstdlib>
using namespace std;

//Interest is 6% annually.

int main()
{
	double principal {1000.00};   //start with this many dollars

	cout << "year  principal\n"   //column headings
             << "----  ---------\n";

	for (int year {1}; year <= 30; ++year) {
		principal *= 1.06;   //means principal = principal * 1.06

		cout << " " << setw(2) << year << "   $"
			<< fixed << setprecision(2) << principal << "\n";

		//Every 10 years, skip a line for legibility.
		if (year % 10 == 0) {
			cout << "\n";
		}
	}

	return EXIT_SUCCESS;
}