I have a question about c language coding.

Hello. I have a question about c language coding.

```#include int main(void)

{ double c, f;
printf("Enter a Fahrenheit value: ");
scanf_s("%lf", &f);

*c = 5.0 / 9.0 * (f - 32.0);*

printf("C" value is %lf degrees\n", c);

return 0; } ```

When I first wrote the code, I wrote c = 5/9 * (f-32); and the result was, Enter a Fahrenheit value: 100 Celsius is 0.000000 degrees.

That's what it says.

I wonder why I have to write down the decimal point to get the result.