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



int main()
{
	cout << "Please type your weight in pounds:\n";
	double weight {0.00};   
	cin >> weight;

	if (!cin) {
		cerr << "Could not perform input.\n";
		return EXIT_FAILURE;
	}

	if (weight <= 0.00) {
		cerr << "Sorry, weight must be positive.\n";
		return EXIT_FAILURE;
	}

	cout << "How many years will you be doing this diet for? ";
	int nyears {0};
	cin >> nyears;

	if (!cin) {
		cerr << "Could not perform input.\n";
		return EXIT_FAILURE;
	}

	if (nyears <= 0) {
		cerr << "Sorry, the number of calories must be positive.\n";
		return EXIT_FAILURE;
	}

	cout << "What is the annual calorie increase rate? ";
	double rate {0.0};
	cin >> rate;

	if (!cin) {
		cerr << "Could not perform input.\n";
		return EXIT_FAILURE;
	}

	if (rate <= 0) {
		cerr << "Sorry, the calorie increase rate must be positive.\n";
		return EXIT_FAILURE;
	}

	const double factor {1.00 + .25 * rate};

	cout << "year  weight\n"   
             << "----  ------\n";

	for (int year {1}; year <= nyears; ++year) {
		weight *= factor;   

		cout << "  " << setw(2) << year << " years  "
			<< fixed << setprecision(2) << weight << "\n";
	}

	return EXIT_SUCCESS;
}