Weird calculation problem

[Gas]

I am new to C#, I want to perfoem a calculation and I have a weird out come
from the app.

Here is the code

double percentage = 0;

percentage = ctrl1.Height / (ctrl1.Height+ ctrl2.Height)

when I try to output the percentage, it is always 0.
(ctrl1.Height and ctrl2.Height are positive value)

anyone can give me some help here?


Gas

 

[Roy Fine]

Gas

all computations are being done using integer math - and the results will be
either 0 or 1, then stored in the double.

consider casting one variable to a double - and that will get the entire
expression to be evaluated using floating point math instead of integer
math. try something like this:

double percentage = 0;
percentage = (double)ctrl1.Height / (ctrl1.Height+ ctrl2.Height)


regards
roy