import java.util.Scanner;

public class Converter {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);

        System.out.println("Welcome to the Fahrenheit/Celsius Converter!");
        System.out
                .println("To convert, type in your temperature and the identify if you are using fahrenheit or celsius.");
        System.out.println("Example: 69F or 69C F = Fahrenheit C = Celsius");

        String temperature;
        char f = 'f';
        char c = 'c';
        char C = 'C';
        double answer, temp;

        temperature = keyboard.nextLine();

        if (temperature.contains("C")) {
            temperature = temperature.replace(C, ' ');
            temp = Double.valueOf(temperature);
            answer = (double) (temp * (9 / 5) + 32);
            System.out.println("Poof! The temperature is " + answer + "F");
        } else if (temperature.contains("c")) {
                temperature = temperature.replace(c, ' ');
                temp = Double.valueOf(temperature);
                answer = (double) (temp * (9 / 5) + 32);
                System.out.println("Poof! The temperature is " + answer + "F");
        } else if (temperature.contains("F")) {
                temperature = temperature.replace(f, ' ');
                temp = Double.valueOf(temperature);
                answer = (double) ((temp - 30) * (5 / 9));
                System.out.println("Poof! The temperature is " + answer
                            + "C");
        } else if (temperature.contains("f")) {
                temperature = temperature.replace(f, ' ');
                temp = Double.valueOf(temperature);
                answer = (double) ((temp - 30) * (5/9));
                System.out.println("Poof! The temperature is " + answer
                                + "C");
        } else {
            System.out.println("You entered the temperature wrong!");
        }
        keyboard.close();
    }
}