Noun
the conventional characters of the alphabet used to represent speech
Source: WordNethis grandmother taught him his letters Source: Internet
It then loops, reading an ASCII character (a single byte) from the src string, checking if it is an alphabetic character, and if so converting it into a lower-case character, then writing the character into the dst string. Source: Internet
Valid function names begin with an alphabetic character, and can contain letters, numbers, or underscores. Source: Internet