ctype API

Standard C ctype API functions. More...

Functions
int	isupper (int c)
	Check if character is uppercase letter.
int	islower (int c)
	Check if character is lowercase letter.
int	isalpha (int c)
	Check if character is alphabetic.
int	isdigit (int c)
	Check if character is decimal digit.
int	isalnum (int c)
	Check if character is alphanumeric.
int	isspace (int c)
	Check if character is a white-space.
int	iscntrl (int c)
	Check if character is a control character.
int	isprint (int c)
	Check if character is printable.
int	isgraph (int c)
	Check if character has graphical representation.
int	ispunct (int c)
	Check if character is a punctuation.
int	isxdigit (int c)
	Check if character is hexadecimal digit.
int	toupper (int c)
	Convert lowercase letter to uppercase.
int	tolower (int c)
	Convert uppercase letter to lowercase.

Detailed Description

Standard C ctype API functions.