1. An electronic apparatus comprising: a display configured to detect a coordinate corresponding to a contact position on the display; a display processor configured to display first strokes input by loci of contact points on the display; and a processor configured to change, by using a position of a first character recognizable from at least part of the first strokes and a position of a second character recognizable from at least part of the first strokes, one or more coordinates of at least part of the first strokes corresponding to either the first character or the second character; wherein the display processor is configured, by using changed coordinates, to display at least one of the first strokes corresponding to either the first character or the second character.