C++ program to input temperature in Fahrenheit and convert it to Celsius and Kelvin

/* Program will ask user to input temperature in  fahrenheit and 
*convert it to celcius and kelvin
*By: Destiny Muldrow
*/

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
  //set the variables (constant is used to convert to kelvin)  
  const double DIFFERENCE = 273.15;
  double fahrenheit;
  double celcius;
  double kelvin;
  
  //asks user for the temperature in fahrenhheit
  cout << "Enter temperature in fahrenheit: ";
  cin >> fahrenheit;
  
  //calculate how to convert fahrenheit to celcius and kelvin
  celcius = (fahrenheit - 32) / 1.8;
  kelvin = celcius + DIFFERENCE; 
  
  //sets the decimal place to three places over
  cout << fixed << setprecision(3);
  
  //output the temperature in celcius and kelvin
  cout << "Temperature in celsius is: " <<  celcius << endl;
  cout << "Temperature  in kelvin is: " << kelvin << endl;
   
  return 0;
}