public class temperature {
    public static double celsiusToFahrenheit(double c) {
        return c * 9.0 / 5.0 + 32;
    }
    public static double fahrenheitToCelsius(double f) {
        return (f - 32) * 5.0 / 9.0;
    }
    public static void main(String[] args) {
        double c = 36.6;
        double f = celsiusToFahrenheit(c);
        System.out.printf("%.2f 摄氏度 = %.2f 华氏度\n", c, f);
        double f2 = 98.6;
        double c2 = fahrenheitToCelsius(f2);
        System.out.printf("%.2f 华氏度 = %.2f 摄氏度\n", f2, c2);
    }
}