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off-by-one error

off-by-one error noun: a logic error where a value, typically the number of iterations of a loop, is specified incorrectly, being either 1 less or 1 more than it should be.

Noun

off-by-one error (plural off-by-one errors)

  1. A logic error where a value, typically the number of iterations of a loop, is specified incorrectly, being either 1 less or 1 more than it should be.
    • Using an incorrect relational operator or an incorrect final value of a loop counter in the loop-continuation condition of a repetition statement causes an off-by-one error.2005, Harvey M. Deitel, Paul J. Deitel, C# for Programmers, second edition, Prentice Hall Professional, →ISBN, page 164
    Synonyms:
    off-by-one bug, OBOE, OBO

Synonyms of off-by-one error

Forms of off-by-one error

pluraloff-by-one errors

Questions about off-by-one error

What does off-by-one error mean?
Off-by-one error means a logic error where a value, typically the number of iterations of a loop, is specified incorrectly, being either 1 less or 1 more than it should be.
What part of speech is off-by-one error?
Off-by-one error is a noun.
What is the plural of off-by-one error?
The plural of off-by-one error is off-by-one errors.

Words near off-by-one error in the dictionary

  1. off-brand
  2. off-Broadway
  3. off-Broadways
  4. off-by-one bug
  5. off-by-one bugs
  6. off-by-one error
  7. off-by-one errors
  8. off-camera
  9. off-campus
  10. off-cast
  11. off-casting

Source and license

Adapted from Wiktionary: off-by-one error (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: En-us-off-by-one error.oga.

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