#include <unctrl.h>
The unctrl() function generates a character string that is a printable representation of c. If c is a control character,it is converted to the ^X notation. If c contains rendition information, the effect is undefined.
Upon successful completion, the unctrl() function returns the generated string. Otherwise, it returns a null pointer.
No errors are defined.
addch(3XCURSES), addstr(3XCURSES), wunctrl(3XCURSES)