ANSIify function definitions.

Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by:	md5

1 files changed, 2 insertions, 4 deletions

diff --git a/usr.bin/rev/rev.c b/usr.bin/rev/rev.c
index 86d7276..6a48d5e 100644
--- a/usr.bin/rev/rev.c
+++ b/usr.bin/rev/rev.c
@@ -58,9 +58,7 @@ __FBSDID("$FreeBSD$");
 void usage(void);
 
 int
-main(argc, argv)
-	int argc;
-	char *argv[];
+main(int argc, char *argv[])
 {
 	const char *filename, *p, *t;
 	FILE *fp;
@@ -108,7 +106,7 @@ main(argc, argv)
 }
 
 void
-usage()
+usage(void)
 {
 	(void)fprintf(stderr, "usage: rev [file ...]\n");
 	exit(1);