#include <iostream>
#include <iomanip>
#include <cstdlib>

using namespace std;

int main()
{
	double principal {0.00};
        double yield {0.00};
	int duration{0};
	
	cout <<"What is your beginning balance?\n";
		
	cin >> principal;

	if (!cin) {
		cerr << "Please enter a non-negative account balance.\n";
		return EXIT_FAILURE;
	}

	cout << "Thank you.  Please enter your target annual yield as a percentage.\n";

	cin >> yield;

	if(!cin) {
		cerr << "Not a valid yield rate.\n";
		return EXIT_FAILURE;
	}

	cout <<"Thank you.  What is the term of your investment in years?\n";

	cin >> duration;

	if(!cin) {
		cerr <<"This is not a vaild investment duration.  Try again.\n";
		return EXIT_FAILURE;
	}	

	if( duration < 0) {
		cerr <<"Unfortunately, we haven't yet mastered time travel.  Please enter a positive number.\n";
		return EXIT_FAILURE;
	}

	const double factor {yield*.01 + 1};

	double balance {principal};

	cout << fixed << setprecision (2) << "\n\nStarting with $" 
		<< balance << " and an expected return of " << yield << "% over a " 
		<< duration << " year term, annualized returns are as follows:\n";

	for ( int term {duration} ; term >= 2 ; --term ) {
	 	double growth {balance *= factor};
		cout << fixed << "With "<< (term - 1) 
		<< " years remaining until maturation, your expected valuation is $"; 
		cout << fixed << setprecision (2) << growth << ".\n";
		if (term % 10 == 0) {
			cout <<"\n";
		}
		if((term - 1) == 1) {
			cout << "Upon maturation, your expected valuation is $";
			cout << fixed << setprecision (2) << growth << ".\n";
		}	
	}				
	return EXIT_SUCCESS;
}