/**
 * Converts Fahrenheit to Celsius and from miles per hour to km per hour
 * 
 * Illustrates 
 * - Using parenthesis to enforce order of operations
 * - Division with floating point numbers
 * - Using final keyword for mathematical constants
 * 
 * @author alchambers
 */
public class Conversions{

    public static void main(String[] args){
        
        // The equation for converting fahrenheit to celsius:
        // C = (F - 32) * 5/9
        final int FREEZING_POINT = 32;
        final double CONVERSION_RATIO = 5.0/9.0;

        double fahrenheit = 50.0;        
        double celsius = (fahrenheit - FREEZING_POINT) * CONVERSION_RATIO;        
        System.out.println(fahrenheit + " degrees fahrenheit equals " 
                            + celsius + " degrees celsius");
        
        
        // The conversion factor between mph and km/h is
        // 1 mph = 1.60935 km/h
        final double CONVERSION_FACTOR = 1.60935;
        double milesPerHour = 60.0;
        double kmPerHour = milesPerHour * CONVERSION_FACTOR;        
        System.out.println(milesPerHour + " mph in kilometers is " + kmPerHour + " km/h");
    }
}