### 13.3 `unctrl`—get printable representation of a character ¶

Synopsis

    #include <unctrl.h>
    char *unctrl(int c);
    int unctrllen(int c);

Description
`unctrl` is a macro which returns the printable representation of c as a string. `unctrllen` is a macro which returns the length of the printable representation of c.

Returns
`unctrl` returns a string of the printable representation of c.

`unctrllen` returns the length of the string which is the printable representation of c.

Portability
`unctrl` and `unctrllen` are not ANSI C.

No supporting OS subroutines are required.