C++ <cctype> header


The <cctype> header file declares a set of functions to classify (and transform) individual characters. For example, isupper() checks whether a character is uppercase or not.

Search <cctype> Functions

Method Description
C++ isalpha() checks if given character is alphabet or not
C++ isblank() checks if given character is a blank character
C++ iscntrl() checks if given character is control character
C++ isdigit() checks if given character is a digit or not
C++ isgraph() checks if given character is graphic or not
C++ islower() checks if given character is lowercase
C++ isprint() check if given character is printable or not
C++ ispunct() check if given character is punctuation character
C++ isspace() check if given character is whitespace character
C++ isupper() check if given character is uppercase or not
C++ isxdigit() checks if given character is hexadecimal character
C++ tolower() converts a given character to lowercase
C++ toupper() converts a given character to uppercase