1 /* rdchar.c 4.1 83/03/09 */ 2 /* 3 * rdchar: returns a readable representation of an ASCII char, using ^ notation. 4 */ 5 6 #include <ctype.h> 7 8 char *rdchar(c) 9 char c; 10 { 11 static char ret[4]; 12 register char *p; 13 14 /* 15 * Due to a bug in isprint, this prints spaces as ^`, but this is OK 16 * because we want something to show up on the screen. 17 */ 18 ret[0] = ((c&0377) > 0177) ? '\'' : ' '; 19 c &= 0177; 20 ret[1] = isprint(c) ? ' ' : '^'; 21 ret[2] = isprint(c) ? c : c^0100; 22 ret[3] = 0; 23 for (p=ret; *p==' '; p++) 24 ; 25 return (p); 26 } 27