Percentage Calculation returns 0

[Memor-X]

i have this event set up with a Call Script

returner = (30/200)*100
p returner

every time it runs, it returns 0 despite the fact it should be returning 15, the purpose of this is supposed to return a percentage

so any know why this doesn't works? it works fine of i just stick 30 or 200 in the variable but the moment i divide them it becomes 0 (and from that, 0 x # will always equal 0)

[KK20]

The magical world of ints and floats.

(30/200)*100 = (0)*100 = 0

(30.0/200)*100 = (0.15)*100 = 15

(30/200.0)*100 = (0.15)*100 = 15

[Memor-X]

make......sense, strange how a variable will detect the difference between 15 and "15" being an integer and string but not a float, added .to_f in my original code to the variables 30 and 200 represented and it works now, thanks

[KK20]

If you tagged a .0 to the end, then the variable will recognize it as a float. The simple act of dividing doesn't instantly make the program think "Oh, my user must want decimal numbers." I mean, you could rewrite the '/' method in Integer if you wanted to, but that would be plain stupid.

[Blizzard]

There is also something called a floating point precision error. Due to hardware limitations if you define 2.0, it may actually be 1.999999 and that prevision error propagates further during multiplication and summing. The alternative to avoid that and still have the proper result is to first do all multiplication operations.

30 * 100 / 200 = 3000 / 200 = 15

I personally avoid using floats whenever possible. Usually I use float only where the lack of precision isn't really a problem in the calculation.