int main()
{
    float Celsius, Fahrenheit, Kelvin;
    int choice;

    printf("Hello, this program is a converter for the temperature \n");
    printf("You need a choice for Celsius, Fahrenheit, Kelvin \n");
    printf("1 = Celsius, 2 = Fahrenheit, 3 = Kelvin  \n");
    scanf("%d", &choice);
    
    while(1)
    {
        switch (choice)
        {
        case 1:
            printf("The Celsius is: \n");
            scanf("%f", &Celsius);

            Fahrenheit = (Celsius * (9.f/5.f)) + 32.f;
            Kelvin = Celsius + 273.15f;

            printf("Fahrenheit = (Celsius * 9/5) + 32 \n");
            printf("%f degrees Celsius equals %f degrees Fahrenheit \n", Celsius, Fahrenheit);
            printf("Kelvin = Celsius + 273.15\n");
            printf("%f degrees Celsius equals %f degrees Kelvin \n", Celsius, Kelvin);
            break;

        case 2:
            printf("The Fahrenheit is: \n");
            scanf("%f", &Fahrenheit);
            
            Fahrenheit = (Celsius * 1.8f);
            Kelvin = Celsius - 273.15f;

            printf("Fahrenheit = (Celsius * 1.8) \n");
            printf("%f degrees Fahrenheit equals %f degrees Celsius \n", Fahrenheit, Celsius);
            printf("Fahrenheit = (Celsius * 1.8) \n");
            printf("Kelvin = Fahrenheit equals %f degrees Kelvin \n", Fahrenheit, Kelvin);
            break;

        case 3:
            printf("The Kelvin is: \n");
            scanf("%f", &Kelvin);

            Kelvin = Fahrenheit (1.8f * Kelvin) - 459.67f;
            Kelvin = Celsius - 273.15f;

            printf("Kelvin = (Fahrenheit * 1.8) \n");
            printf("%f degrees Fahrenheit equals %f degrees Kelvin \n", Kelvin, Celsius);
            printf("Kelvin =(Celsius * 1.8)\n");
            printf("Kelvin = Fahrenheit equals %f degrees Kelvin \n", Fahrenheit, Kelvin);
            break;

        default:
            printf("The value is not a number !");
            break;
            }
        }
    return(0);
}