1 /* 2 * Copyright (c) 1987 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 char copyright[] = 20 "@(#) Copyright (c) 1987 Regents of the University of California.\n\ 21 All rights reserved.\n"; 22 #endif /* not lint */ 23 24 #ifndef lint 25 static char sccsid[] = "@(#)rev.c 4.4 (Berkeley) 06/29/88"; 26 #endif /* not lint */ 27 28 #include <stdio.h> 29 30 main(argc, argv) 31 int argc; 32 char **argv; 33 { 34 register char *t, *bp; 35 char buf[BUFSIZ]; 36 37 bp = buf; 38 do { 39 if (argc > 1 && !freopen(*++argv, "r", stdin)) { 40 fprintf(stderr, "rev: cannot open %s.\n", *argv); 41 exit(1); 42 } 43 while (fgets(bp, sizeof(buf), stdin)) { 44 for (t = bp; *t; ++t); 45 if (*--t == '\n') 46 --t; 47 for (; t >= bp; --t) 48 putchar(*t); 49 putchar('\n'); 50 } 51 } while(--argc > 1); 52 exit(0); 53 } 54