--- ray/src/gen/gencat.c	2003/06/08 12:03:09	2.4
+++ ray/src/gen/gencat.c	2007/09/20 21:28:35	2.6
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: gencat.c,v 2.4 2003/06/08 12:03:09 schorsch Exp $";
+static const char	RCSid[] = "$Id: gencat.c,v 2.6 2007/09/20 21:28:35 greg Exp $";
 #endif
 /*****************************************************************************
   This program is to make series of right triangles forming hyperbolic cosin
@@ -77,6 +77,7 @@ register char  **av;
 	putchar('\n');
 }
 
+int
 main (argc, argv)
 int argc;
 char *argv[];
@@ -90,7 +91,8 @@ char *argv[];
    int  n;
 
    if (argc != 11) {
-      fprintf(stderr, "Usage: gencat material name x0 y0 z0 x1 y1 z1 k d\n");
+      fprintf(stderr, "Usage: %s  material name x0 y0 z0 x1 y1 z1 k d\n",
+      		argv[0]);
       exit(1);
    }      
 
@@ -135,5 +137,6 @@ char *argv[];
       }
       h += delh;
    }
+   return 0;
 }