# How can 1/100=0 **URL:** \ **Category:** Ruby\ **Created:** [February 8, 2008, 5:10pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544 "2008-02-08T17:10:52Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:10pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/1 "2008-02-08T17:10:52Z")
cannot belive my eyes. how can 1/100 be equal to 0. E:\Documents and Settings\Roasty\>irb irb(main):001:0\> TRAILING\_STOP=1/100 =\> 0 irb(main):002:0\> TRAILING\_STOP =\> 0 irb(main):003:0\> ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:12pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/2 "2008-02-08T17:12:05Z")
On Feb 8, 5:06 pm, Junkone [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > cannot belive my eyes. how can 1/100 be equal to 0. > E:\Documents and Settings\Roasty\>irb > irb(main):001:0\> TRAILING\_STOP=1/100 > =\> 0 > irb(main):002:0\> TRAILING\_STOP > =\> 0 > irb(main):003:0\> in what languages it isn’t? $ python Python 2.5.1 (r251:54863, May 12 2007, 11:15:25) [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin Type “help”, “copyright”, “credits” or “license” for more information. > > > 1/100 > > > 0 (and C too, though I won’t write the program here). anyway, you can have 1/100 return a rational: $ irb irb(main):001:0\> require ‘mathn’ =\> true irb(main):002:0\> 1/100 =\> 1/100 irb(main):003:0\> (1/100).denominator =\> 100 Paolo ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:14pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/3 "2008-02-08T17:14:27Z")
On Feb 8, 2008, at 11:10 AM, Junkone wrote: > cannot belive my eyes. how can 1/100 be equal to 0. > E:\Documents and Settings\Roasty\>irb > irb(main):001:0\> TRAILING\_STOP=1/100 > =\> 0 > irb(main):002:0\> TRAILING\_STOP > =\> 0 > irb(main):003:0\> Integer division. -Rob Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) removed\_email\_address@domain.invalid ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:17pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/4 "2008-02-08T17:17:49Z")
Junkone wrote: > cannot belive my eyes. how can 1/100 be equal to 0. > E:\Documents and Settings\Roasty\>irb > irb(main):001:0\> TRAILING\_STOP=1/100 > =\> 0 > irb(main):002:0\> TRAILING\_STOP > =\> 0 > irb(main):003:0\> Try 1.0/100.0 ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:25pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/5 "2008-02-08T17:25:47Z")
On Feb 8, 11:09 am, Paolo B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > in what languages it isn’t? > anyway, you can have 1/100 return a rational: > > $ irb > irb(main):001:0\> require ‘mathn’ > =\> true > irb(main):002:0\> 1/100 > =\> 1/100 > irb(main):003:0\> (1/100).denominator > =\> 100 > > Paolo should 1/100=.01 ??? ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 5:32pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/6 "2008-02-08T17:32:15Z")
On Feb 8, 2008 5:24 PM, Junkone [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > should 1/100=.01 ??? Like said, it is about integer division. If you divide an _integer_ with another integer you’ll get the integer result: > 5 / 2 > =\> 2 > If you have a float in the term, the result becomes a float > 1.0 / 100 > =\> 0.01 > 1 / 100.0 > =\> 0.01 ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [February 8, 2008, 6:02pm UTC](https://www.ruby-forum.com/t/how-can-1-100-0/128544/7 "2008-02-08T18:02:24Z")
On Feb 8, 5:20 pm, Junkone [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > irb(main):002:0\> TRAILING\_STOP > > > 0 > > > irb(main):003:0\> (1/100).denominator > > > =\> 100 > > > Paolo > > should 1/100=.01 ??? Even in C, 1/100 = 0. But 1.0/100.0 or 1.0/100 or 1/100.0 = 0.01 because the division is done in floating-point math. Paolo