import java.util.Scanner;
 
class TemperatureConverter {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        System.out.println("Temperature Converter");
        System.out.println("1. Celsius to Fahrenheit");
        System.out.println("2. Fahrenheit to Celsius");
        System.out.println("3. Celsius to Kelvin");
        System.out.println("4. Kelvin to Celsius");
        System.out.print("Choose option (1-4): ");
 
        int choice = sc.nextInt();
        double temp, result;
 
        switch (choice) {
            case 1:
                System.out.print("Enter Celsius: ");
                temp = sc.nextDouble();
                result = (temp * 9 / 5) + 32;
                System.out.printf("Result: %.2f °F%n", result);
                break;
 
            case 2:
                System.out.print("Enter Fahrenheit: ");
                temp = sc.nextDouble();
                result = (temp - 32) * 5 / 9;
                System.out.printf("Result: %.2f °C%n", result);
                break;
 
            case 3:
                System.out.print("Enter Celsius: ");
                temp = sc.nextDouble();
                result = temp + 273.15;
                System.out.printf("Result: %.2f K%n", result);
                break;
 
            case 4:
                System.out.print("Enter Kelvin: ");
                temp = sc.nextDouble();
                result = temp - 273.15;
                System.out.printf("Result: %.2f °C%n", result);
                break;
 
            default:
                System.out.println("Invalid Choice!");
        }
 
        sc.close();
    }
}