--- a/rogue4/move.c	Fri Feb 26 17:30:30 2016 -0500
+++ b/rogue4/move.c	Wed Mar 02 21:28:34 2016 -0500
@@ -14,6 +14,9 @@
 #include <ctype.h>
 #include "rogue.h"
 
+void turnref(void);
+char be_trapped(coord *tc);
+
 /*
  * Used to hold the new hero position
  */
@@ -24,8 +27,8 @@
  * do_run:
  *	Start the hero running
  */
-do_run(ch)
-char ch;
+void
+do_run(char ch)
 {
     running = TRUE;
     after = FALSE;
@@ -37,8 +40,8 @@
  *	Check to see that a move is legal.  If it is handle the
  * consequences (fighting, picking up, etc.)
  */
-do_move(dy, dx)
-int dy, dx;
+void
+do_move(int dy, int dx)
 {
     register char ch, fl;
 
@@ -189,7 +192,8 @@
  * turnref:
  *	Decide whether to refresh at a passage turning or not
  */
-turnref()
+void
+turnref(void)
 {
     register int index;
 
@@ -211,8 +215,8 @@
  *	Called to illuminate a room.  If it is dark, remove anything
  *	that might move.
  */
-door_open(rp)
-struct room *rp;
+void
+door_open(struct room *rp)
 {
     register int j, k;
     register char ch;
@@ -238,8 +242,8 @@
  * be_trapped:
  *	The guy stepped on a trap.... Make him pay.
  */
-be_trapped(tc)
-register coord *tc;
+char
+be_trapped(coord *tc)
 {
     register char tr;
     register int index;
@@ -316,8 +320,7 @@
  *	Move in a random direction if the monster/person is confused
  */
 coord *
-rndmove(who)
-THING *who;
+rndmove(THING *who)
 {
     register int x, y;
     register char ch;