- SYNOPSIS
-
Tests if a one-character string is alphabetic.
- DESCRIPTION
-
The call isalpha s tests whether the first character of string s (normally
it is the only character) is alphabetic, i.e. an uppercase or lowercase
letter, an underscore or a prime character.
- FAILURE CONDITIONS
-
Fails if the string is empty.
- SEE ALSO
-
isalnum, isbra, isnum, issep, isspace, issymb.