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Functions | |
Character classification routines | |
These functions perform character classification. They return true or false status depending whether the character passed to the function falls into the function's classification (i.e. isdigit() returns true if its argument is any value '0' though '9', inclusive). If the input is not an unsigned char value, all of this function return false. | |
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) |
Character convertion routines | |
int | toascii (int __c) |
int | tolower (int __c) |
int | toupper (int __c) |