You may cause an off-by-one error when working with a character position within a string if you think of the first position in the string as 1.

Name: You may cause an off-by-one error when working with a character position within a string if you think of the first position in the string as 1.
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Quizplus · Accepted Answer

Off-by-one errors occur when indexing is misunderstood; in many programming languages, string positions start at 0, not 1, leading to errors if you incorrectly assume the first position is 1.

You May Cause an Off-By-One Error When Working with a Character