//
//  	converter for Cel. <-> Feh.
//

import java.util.Scanner;

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

		System.out.print("Input (C/F) ? ");
		String ans = input.next();
		double c_value, f_value;

		if(ans.equalsIgnoreCase("c"))
		{	// C->F
			System.out.print("Input a value in Cel. ");
			c_value = input.nextDouble();
			f_value = 9.0/5 * c_value + 32;
			System.out.println(c_value + " is equal. to " +
				f_value + " in Feh.\n");
		}
		else if (ans.equalsIgnoreCase("f"))
		{	// F -> C
			System.out.print("Input a value in Feh. ");
			f_value = input.nextDouble();
			c_value = 5.0/9 * (f_value - 32);
			System.out.println(f_value + " is equal. to " +
				c_value + " in Cel.\n");
		}
		else
			System.out.println("\nInvalid input. Try again.\n\n");

	}
}