This header was originally in the C standard library as<ctype.h>.
This header is part of thenull-terminated byte strings library.
Functions | |
| checks if a character is alphanumeric (function)[edit] | |
| checks if a character is alphabetic (function)[edit] | |
| checks if a character is lowercase (function)[edit] | |
| checks if a character is an uppercase character (function)[edit] | |
| checks if a character is a digit (function)[edit] | |
| checks if a character is a hexadecimal character (function)[edit] | |
| checks if a character is a control character (function)[edit] | |
| checks if a character is a graphical character (function)[edit] | |
| checks if a character is a space character (function)[edit] | |
(C++11) | checks if a character is a blank character (function)[edit] |
| checks if a character is a printing character (function)[edit] | |
| checks if a character is a punctuation character (function)[edit] | |
| converts a character to lowercase (function)[edit] | |
| converts a character to uppercase (function)[edit] | |
namespace std{int isalnum(int c);int isalpha(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);int toupper(int c);}
