// Exercise4_4.java: Create a method for
// converting Celsius to Fahrenheit
public class Exercise4_4 {
    public static void main(String[] args) {
        System.out.println("Celsius\t\tFahrenheit\t|\tFahrenheit\tCelsius");
        System.out.println("---------------------------------------------");
        
        double celsius = 40; double farenheit = 120;
        for (int i = 1; i <= 10; celsius--, farenheit -= 10, i++) {
            System.out.println(celsius + "\t\t" + celsiusToFahrenheit(celsius) + "\t|\t" + farenheit + "\t\t" + fahrenheitToCelsius(farenheit));
        }
    }
    
    public static double celsiusToFahrenheit(double celsius) {
        return (9.0 / 5.0) * celsius + 32;
    }
    
    public static double fahrenheitToCelsius(double fahrenheit) {
        return (5.0 / 9) * (fahrenheit - 32);
    }
}