====== cctype ======

==== character classification ====

^ Function                ^ Description                ^
| [[cpp:cctype:isalnum|]]        |checks if char is alphanumeric       |
| [[cpp:cctype:isalpha|]]        |checks if char is alphabetic         |
| [[cpp:cctype:isascii|]]        |checks if char is an ascii char      |
| [[cpp:cctype:isblank|]]        |checks if char is blank              |
| [[cpp:cctype:iscntrl|]]        |checks if char is a control char     |
| [[cpp:cctype:isdigit|]]        |checks if char is a digit            |
| [[cpp:cctype:isgraph|]]        |checks if char is printing character except space (' ')           |
| [[cpp:cctype:islower|]]        |checks if char is lowercase          |
| [[cpp:cctype:isprint|]]        |checks if char is printable          |
| [[cpp:cctype:ispunct|]]        |checks if char is a punctuation char |
| [[cpp:cctype:isspace|]]        |checks if char is space              |
| [[cpp:cctype:isupper|]]        |checks if char is uppercase          |
| [[cpp:cctype:isxdigit|]]       |checks if char is hexadecimal        |



==== convert functions ====

^ Function                ^ Description                ^
| [[cpp:cctype:toascii|]]        |converts a char to ascii      |
| [[cpp:cctype:tolower|]]        |converts a char to lowercase  |
| [[cpp:cctype:toupper|]]        |converts a char to uppercase  |