Temperature Converter

public static class TemperatureConverter {
    public static double CelsiusToFahrenheit(string temperatureCelsius) {
        // Convert argument to double for calculations.
        double celsius = double.Parse(temperatureCelsius);

        // Convert Celsius to Fahrenheit.
        double fahrenheit = (celsius * 9 / 5) + 32;

        return fahrenheit;
    }

    public static double FahrenheitToCelsius(string temperatureFahrenheit) {
        // Convert argument to double for calculations.
        double fahrenheit = double.Parse(temperatureFahrenheit);

        // Convert Fahrenheit to Celsius.
        double celsius = (fahrenheit - 32) * 5 / 9;

        return celsius;
    }
}


public class TestTemperatureConverter : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        Debug.Log("Please select the convertor direction");
        Debug.Log("1. From Celsius to Fahrenheit.");
        Debug.Log("2. From Fahrenheit to Celsius.");
        Debug.Log(":");

        string selection = Input.inputString;
        double F = 0, C = 0;

        switch (selection) {
            case "1":
                Debug.Log("Please enter the Celsius temperature: ");
                F = TemperatureConverter.CelsiusToFahrenheit(Input.inputString);
                Debug.Log("Temperature in Fahrenheit: " + F.ToString("F2"));
                break;

            case "2":
                Debug.Log("Please enter the Fahrenheit temperature: ");
                C = TemperatureConverter.FahrenheitToCelsius(Input.inputString);
                Debug.Log("Temperature in Celsius: " + C.ToString("F2"));
                break;

            default:
                Debug.Log("Please select a convertor.");
                break;
        }
                // Keep the console window open in debug mode.
                Debug.Log("Press any key to exit.");
        }
    }