Definitions for off by one error
The New Hacker's Dictionary
off by one error
[common] Exceedingly common error induced in many ways, such as by starting at 0 when you should have started at 1 or vice-versa, or by writing < N instead of <= N or vice-versa. Also applied to giving something to the person next to the one who should have gotten it. Often confounded with fencepost error, which is properly a particular subtype of it.
Use the citation below to add this definition to your bibliography:
"off by one error." Definitions.net. STANDS4 LLC, 2013. Web. 18 May 2013. <http://www.definitions.net/definition/off by one error>.