/*	rdchar.c	4.1	83/03/09	*//* * rdchar: returns a readable representation of an ASCII char, using ^ notation. */#include <ctype.h>char *rdchar(c)char c;{	static char ret[4];	register char *p;	/*	 * Due to a bug in isprint, this prints spaces as ^`, but this is OK	 * because we want something to show up on the screen.	 */	ret[0] = ((c&0377) > 0177) ? '\'' : ' ';	c &= 0177;	ret[1] = isprint(c) ? ' ' : '^';	ret[2] = isprint(c) ?  c  : c^0100;	ret[3] = 0;	for (p=ret; *p==' '; p++)		;	return (p);}