The fomula? celsius = 5.0 / 9.0 * ( fahrenheit - 32 ); fahrenheit = 9.0 / 5.0 *

Question

The fomula?

celsius = 5.0 / 9.0 * ( fahrenheit - 32 );

fahrenheit = 9.0 / 5.0 * celsius + 32;

Create a TemperatureConverter program with static methods toCelsius and toFahrenheit. See Exercise 22 on page 239 for the formulas. Each method has a double parameter and returns a double. Each method converts and returns the converted temperature. Input and output must be done in main. The program will prompt for a Celsius temperature, then will call the toFahrenheit method and will display the converted temperature with 1 place past the decimal point. The program will then prompt for a Fahrenheit temperature, will call the toCelsius method and will display the converted temperature with 1 place past the decimal point.

Explanation / Answer

import java.util.Scanner;

class TemperatureConverter
{
   public static double toCelcius(double t)
   {
       return (Math.round(((5.0 / 9.0 * ( t - 32 )) * 10)) / 10.0);
   }

   public static double toFarenheit(double t)
   {
       return (Math.round(((9.0 / 5.0 * t + 32) * 10) / 10.0));
   }
   public static void main (String args[])
   {
       Scanner input = new Scanner (System.in);
       double temp;

       System.out.println( "Enter temperature in Celcius");
       temp = input.nextDouble();
       System.out.println( "Temperature in Celcius " + temp+ " is " + toFarenheit(temp) + " in Farenheit");
       System.out.println( "Enter temperature in Farenheit");
       temp = input.nextDouble();
       System.out.println( "Temperature in Farenheit " + temp+ " is " + toFarenheit(temp) + " in Celcius");

   }
}

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