Android issue in division and multiplication

Question

I am facing an issue in multiplication and division:

float value =  (100 / 846) * 500;
Log.i(TAG,"value = " + value);

Every time this float value i slogged as 0.0

What is the problem?

possible duplicate of [noob: Why divide always produces 0.0 float/integer problem?](http://stackoverflow.com/questions/3779604/noob-why-divide-always-produces-0-0-float-integer-problem) — rds, Mar 27 '14 at 09:23
I was only twitting yesterday wondering why people forget primary school maths like integer division and remainder. — Peter Lawrey, Mar 27 '14 at 09:29

score 4 · Answer 1 · answered Mar 27 '14 at 09:17

4

100 / 846 is an integer division and yields 0. Use (100.0 / 846.0) * 500.

answered Mar 27 '14 at 09:17

Stefan

score 4 · Accepted Answer · answered Mar 27 '14 at 09:18

4

100 is not a float, it's an int. Use 100f, 846f and 500f for floats.

answered Mar 27 '14 at 09:18

rds

score 1 · Answer 3 · answered Mar 27 '14 at 09:20

1

You're performing integer division and multiplication and storing that result in a float variable. use float literals instead. E.g. 100f

answered Mar 27 '14 at 09:20

nfusion

score 1 · Answer 4 · answered Mar 27 '14 at 09:22

1

Replace your code with:

float value =  (100F / 846F) * 500F;   
Log.i("==========","  value == > " + value);

answered Mar 27 '14 at 09:22

Himanshu Agarwal

4 Answers4