Convert Fahrenheit to Celsius

#include <iostream>
using namespace std;

// Convert Fahrenheit to Celsius.
int main()
{
    double F = 0; // temperature in Fahrenheit.
    double C = 0; // temperature in Celsius.

    cout << "Enter degrees Fahrenheit:\n";
    cin >> F; // Get the degrees Fahrenheit.
    C = (5.0 / 9.0) * (F - 32); // Convert.

    // Display the result
    cout << F << " degrees Fahrenheit is "
        << C << " degrees Celsius.\n";

    // End the program.
    return 0;
}