Weird output with pelles c

Question

float f=44268/107402;
printf("\n%f",f);

output :

0.000000

How can this happen!

I am using pelles c ide on win 7.

score 5 · Accepted Answer · answered Apr 25 '12 at 16:55

5

The compiler treats the operands as integers. Try:

float f = 44268.0 / 107402;
                ^

Or maybe

float f = (float)44268 / 107402;

answered Apr 25 '12 at 16:55

cnicutar

Thanks man.Now it returns 0.412171.But is still didn't get what's happening. It'll really help if can can you explain a bit? – Alex David Apr 25 '12 at 16:57
when you use an integer to dive an integer, the answer will be an integer too. The number after `.` will be "delete". @user1187786 – madper Apr 25 '12 at 17:03

score 2 · Answer 2 · answered Apr 25 '12 at 16:59

2

Integer division truncates

float f=44268.0/107402;

Making one number float will automatically promote the other number ti float as well finally ending up in a floating point result.

answered Apr 25 '12 at 16:59

score 0 · Answer 3 · edited Apr 25 '12 at 16:59

0

float f = 44268 / 107402;

The variable will be initialize with an integer value. You should add a floating point, to say to the compiler that you want a float value.

float f = 44268. / 107402.;

edited Apr 25 '12 at 16:59

abelenky

answered Apr 25 '12 at 16:57

md5

I really appreciate the explanation.Now i get it.Once again thanks to everyone for helping me, it really bugging for almost an hour. – Alex David Apr 25 '12 at 17:07

3 Answers3