Is it possible to use a function to detect non-printing characters with isctrl() and use printf with %C specifier to print them as '\n' for instance?

Or I should write an if for every control caracter and printf("\\n") for instance..?

OK, thanks to All of the kind people below - it is not posible, you HAVE to specify each situation. example:

if (isctrl(char))// WRONG
 printf("%c", char);

if (char == '\n')//RIGHT, or using switch. 
 printf("\\n");