Hello,
I am writing a simple C program using Visual studio 2008.
And when I divide 5 / 9. I always get an zero. However, the correct value should be 0.5555.
Can anyone explain this?
Many thanks
Code://Calculate the temperature in celsius int CalculateCelsius(int fahrenheit) { float valueA = 0; int valueB = 0; float celsius = 0; valueA = 5 / 9; //Always displays zero valueB = fahrenheit - 32; celsius = valueA * valueB; return (int) celsius; }
Because 5/9 is 0 (remainder 5, but you didn't ask for that). Now, 5.0/9.0 is 0.555555, or as near as the computer can get to that number in 32 bits.
Why do you return an int from your function, when you are attempting to generate a float or double? Even if you fix your division, as tabstop indicated, your calling function will never see that float.
Last edited by kermit; 09-13-2008 at 05:41 AM.
