/* ----HEADER START----
Author: Chris Reed
UNCC ID: 800770336
Course Name: ECGR-2103
Assignment Number: 3 -- Ch. 3 Problem 7
Description: (Brief description of what the program does)
Calculates wind chill index using a function.
----HEADER END----
*/

#include <iostream>
#include <cmath>

using namespace std;

float windChillIndex(float windSpeed,float temperature); // declare function

int main()
{
	// declaring variables
	float windSpeedInput;
	float temperatureInput;
	float windChillIndexOutput;

	cout << "What is the wind speed in meters per second? ";
	cin >> windSpeedInput;

	cout << "What is the temperature in degrees Celsius? ";
	cin >> temperatureInput;

	// calling function
	windChillIndexOutput = windChillIndex(windSpeedInput,temperatureInput);

	cout << "The wind chill index in degrees Celsius is " << windChillIndexOutput << ".\n";

	return 0;
}

float windChillIndex(float windSpeed,float temperature)
{
	// calculating wind chill index
	return 33 - ((10 * sqrt(windSpeed) - windSpeed + 10.5) * (33 - temperature)) / 23.1;
}