--- a/arogue7/command.c	Sun Feb 07 14:39:21 2016 -0500
+++ b/arogue7/command.c	Fri Feb 19 21:02:28 2016 -0500
@@ -29,12 +29,23 @@
 extern struct uwdata wdata;
 #endif
 
+void display(void);
+void help(void);
+void identify(char ch);
+void d_level(void);
+void u_level(void);
+void shell(void);
+void nameit(void);
+void namemonst(void);
+void count_gold(void);
+
 /*
  * command:
  *	Process the user commands
  */
 
-command()
+void
+command(void)
 {
     unsigned char ch;
     struct linked_list *item;
@@ -267,8 +278,8 @@
 			    after = FALSE;
 			}
 		    when C_COUNT : count_gold();
-		    when C_QUAFF : quaff(-1, NULL, NULL, TRUE);
-		    when C_READ : read_scroll(-1, NULL, TRUE);
+		    when C_QUAFF : quaff(-1, 0, 0, TRUE);
+		    when C_READ : read_scroll(-1, 0, TRUE);
 		    when C_EAT : eat();
 		    when C_WIELD : wield();
 		    when C_WEAR : wear();
@@ -280,7 +291,7 @@
 		    when '>' : after = FALSE; d_level();
 		    when '<' : after = FALSE; u_level();
 		    when '?' : after = FALSE; help();
-		    when '/' : after = FALSE; identify(NULL);
+		    when '/' : after = FALSE; identify(0);
 		    when C_USE : use_mm(-1);
 		    when CTRL('T') :
 			if (player.t_action == A_NIL) {
@@ -315,7 +326,7 @@
 			    search(FALSE, FALSE);
 			    player.t_action = A_NIL;
 			}
-		    when C_ZAP : if (!player_zap(NULL, FALSE))
+		    when C_ZAP : if (!player_zap(0, FALSE))
 				    after=FALSE;
 		    when C_PRAY : pray();
 		    when C_CHANT : chant();
@@ -553,7 +564,8 @@
  * 	tell the player what is at a certain coordinates assuming
  *	it can be seen.
  */
-display()
+void
+display(void)
 {
     coord c;
     struct linked_list *item;
@@ -587,8 +599,7 @@
  */
 
 void
-quit(sig)
-int sig;
+quit(int sig)
 {
     /*
      * Reset the signal in case we got here via an interrupt
@@ -628,8 +639,7 @@
  */
 
 void
-bugkill(sig)
-int sig;
+bugkill(int sig)
 {
     signal(sig, quit);	/* If we get it again, give up */
     death(D_SIGNAL);	/* Killed by a bug */
@@ -641,8 +651,8 @@
  *	Player gropes about him to find hidden things.
  */
 
-search(is_thief, door_chime)
-register bool is_thief, door_chime;
+void
+search(bool is_thief, bool door_chime)
 {
     register int x, y;
     register char ch,	/* The trap or door character */
@@ -752,7 +762,8 @@
  *	Give single character help, or the whole mess if he wants it
  */
 
-help()
+void
+help(void)
 {
     register struct h_list *strp = helpstr;
 #ifdef WIZARD
@@ -844,8 +855,8 @@
  *	Tell the player what a certain thing is.
  */
 
-identify(ch)
-register char ch;
+void
+identify(char ch)
 {
     register char *str;
 
@@ -907,6 +918,7 @@
  *	He wants to go down a level
  */
 
+void
 d_level()
 {
     bool no_phase=FALSE;
@@ -958,7 +970,8 @@
  *	He wants to go up a level
  */
 
-u_level()
+void
+u_level(void)
 {
     bool no_phase = FALSE;
     register struct linked_list *item;
@@ -1016,7 +1029,8 @@
  * Let him escape for a while
  */
 
-shell()
+void
+shell(void)
 {
     register char *sh;
 
@@ -1050,7 +1064,8 @@
 /*
  * see what we want to name -- an item or a monster.
  */
-nameit()
+void
+nameit(void)
 {
     char answer;
 
@@ -1073,9 +1088,8 @@
 /*
  * allow a user to call a potion, scroll, or ring something
  */
-nameitem(item, mark)
-struct linked_list *item;
-bool mark;
+void
+nameitem(struct linked_list *item, bool mark)
 {
     register struct object *obj;
     register char **guess = NULL, *elsewise = NULL;
@@ -1161,7 +1175,8 @@
 
 /* Name a monster */
 
-namemonst()
+void
+namemonst(void)
 {
     register struct thing *tp;
     struct linked_list *item;
@@ -1206,7 +1221,8 @@
     msg("There is no monster there to name.");
 }
 
-count_gold()
+void
+count_gold(void)
 {
 	if (player.t_action != C_COUNT) {
 	    msg("You take a break to count your money...");