ch-01-ex-06-solution.cpp
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ch-01-ex-06-solution.cpp
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			/*
			* exercise-06.cpp
			*
			* Record the number of cars passing past your house each day for five
			* consecutive days and calculate the average.
			*
			* Created on: Jul 27, 2012
			* Author: Radu Popescu <radu.popescu@epfl.ch>
			*/

			#include <iostream>

			int main(int argc, char *argv[]) {
			// Store the five values in an integer array
			int number_of_cars[5];

			// Read in the five values
			std::cout << "Enter the number of cars on day one: ";
			std::cin >> number_of_cars[0];
			std::cout << "Enter the number of cars on day two: ";
			std::cin >> number_of_cars[1];
			std::cout << "Enter the number of cars on day three: ";
			std::cin >> number_of_cars[2];
			std::cout << "Enter the number of cars on day four: ";
			std::cin >> number_of_cars[3];
			std::cout << "Enter the number of cars on day five: ";
			std::cin >> number_of_cars[4];

			// Total number of cars that passed
			int total_cars = number_of_cars[0] + number_of_cars[1] + number_of_cars[2] +
			number_of_cars[3] + number_of_cars[4];

			/* To compute the average we need to convert the total number of cars to a
			* double
			*/
			double average = ((double)total_cars) / 5;

			/*
			* NOTE: it is enough that one term of the division is a double. The
			* following statement is equivalent to the previous:
			* double average = total_cars / 5.0;
			*/

			std::cout << "The average number of cars is: " << average << std::endl;

			return 0;
			}