/*
 * File: L3-worldPop.cpp
 *  Purpose:
 *      Estimate the world population growth in a year and
 *      also per day.
 *      Given that on January 1, 2008 the world's population was
 *      estimated at 6,650,000,000 and the estimated growth is
 *      at the rate of +1.14%
 */

#include <iostream>
using namespace std;

int main() {
    double population = 6650000000.0; // double because # is so big
    double growthRate = 1.14 / 100.0;
    int year = 2008;
    cout << "World population on January 1, 2008 is " << population << endl;
    for (int step = 1; step <= 6; step++) {
    	year = year + 1;
    	population = population + population * growthRate;
    	cout << "By Jan. 1, " << year << ", it will be " << population << endl;
    }
    return 0;
}