ctype.h File Reference

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Functions
int	isalnum (int c)
int	isalpha (int c)
int	isascii (int c)
int	isblank (int c)
int	iscntrl (int c)
int	isdigit (int c)
int	isgraph (int c)
int	islower (int c)
int	isprint (int c)
int	ispunct (int c)
int	isspace (int c)
int	isupper (int c)
int	isxdigit (int c)
int	tolower (int c)
	가능하다면, 문자 c 를 소문자로 변환한다. More...
int	toupper (int c)
	가능하다면, 문자 c 를 대문자로 변환한다. More...