isalpha
isalpha
Defined in header <ctype.h> | ||
---|---|---|
int isalpha( int ch ); |
Checks if the given character is an alphabetic character, i.e. either an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ
), or a lowercase letter (abcdefghijklmnopqrstuvwxyz
).
In locales other than "C"
, an alphabetic character is a character for which isupper()
or islower()
returns true
or any other character considered alphabetic by the locale. In any case, <