--- ray/src/px/psum.c	2004/01/02 12:47:01	2.7
+++ ray/src/px/psum.c	2004/03/28 20:33:14	2.8
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: psum.c,v 2.7 2004/01/02 12:47:01 schorsch Exp $";
+static const char	RCSid[] = "$Id: psum.c,v 2.8 2004/03/28 20:33:14 schorsch Exp $";
 #endif
 /*
  *  psum.c - program to sum pictures.
@@ -27,8 +27,10 @@ COLOR  scale[MAXFILE];			/* scaling factors */
 int  nfile;				/* number of files */
 
 static gethfunc tabputs;
+static void psum(void);
 
 
+
 static int
 tabputs(			/* print line preceded by a tab */
 	char	*s,
@@ -40,9 +42,11 @@ tabputs(			/* print line preceded by a tab */
 }
 
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+int
+main(
+	int  argc,
+	char  *argv[]
+)
 {
 	double  d;
 	int  xres, yres;
@@ -123,10 +127,12 @@ char  *argv[];
 	psum();
 	
 	quit(0);
+	return 0; /* pro forma return */
 }
 
 
-psum()				/* sum the files */
+static void
+psum(void)				/* sum the files */
 {
 	COLOR  *scanin, *scanout;
 	int  y, i;
@@ -163,8 +169,9 @@ psum()				/* sum the files */
 
 
 void
-quit(code)		/* exit gracefully */
-int  code;
+quit(		/* exit gracefully */
+	int  code
+)
 {
 	exit(code);
 }