C Library Function– ctype

The <ctype.h> header shall define the following function(s).

Character Classification Functions:

isalnum	int isalnum(int any_character);
isalpha	int isalpha(int any_character);
isblank(C11)	int isblank(int any_character);
iscntrl	int iscntrl(int any_character);
isdigit	int isdigit(int any_character);
isgraph	int isgraph(int any_character);
islower	int islower(int any_character);
isprnt	int isprint(int any_character);
ispunct	int ispunct(int any_character);
isspace	int isspace(int any_character);
isupper	int isupper(int any_character);
isxdigit	int isxdigit(int any_character);

Character case Mapping Functions:

tolower	int tolower(int any_character);
toupper	int toupper(int any_character);

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Related topics:
Library Functions in C   |   Standard Library in C   |   Header Files in C   |   Functions in C   |   Keywords in C   |   Data Types in C   |   Pointers in C

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