double kelvinToCelsius(double k){
    return k - 273.15;
}

double kelvinToFahrenheit(double k){
    return k * 1.8 - 459.67;
}

double kelvinToRankine(double k){
    return k * 1.8;
}
void convertKelvin(double kelvin) {
    printf(, kelvin);
    printf(, kelvinToCelsius(kelvin));
    printf(, kelvinToFahrenheit(kelvin));
    printf(, kelvinToRankine(kelvin));
}

int main(int argc, const char * argv[])
{
    if (argc > 1) {
        double kelvin = atof(argv[1]);
        convertKelvin(kelvin);
    }
    return 0;
}