1. An electronic apparatus for inputting a character in a touch screen, the electronic apparatus comprising: the touch screen configured to: display an input window comprising a plurality of consonant input keys and two vowel input keys corresponding to each of the plurality of consonant input keys, the two vowel input keys being presented around each of the plurality of consonant input keys without touching each of the plurality of consonant input keys, and sense a touch gesture starting from one of the two vowel keys corresponding to each of the plurality of consonant input keys; and a controller configured to: determine an initial consonant according to a selection of one of the two vowel input keys in the input window, by the touch gesture with respect to the one of the two vowel input keys without a touch of the plurality of consonant input keys, and combine the initial consonant with a medial vowel corresponding to the selected one of the two vowel input keys, wherein the touch screen is configured to display a character according to the combination of the initial consonant and the medial vowel.