From 9cc257f239f65800aaed5e80cfc01950acbdade1 Mon Sep 17 00:00:00 2001
From: Carsten Burstedde <burstedde@ins.uni-bonn.de>
Date: Thu, 10 Aug 2023 14:46:49 +0200
Subject: [PATCH] Example circle: require exactly one argument

---
 example/circle/circle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/example/circle/circle.c b/example/circle/circle.c
index 8cda1d563..04e2d8f79 100644
--- a/example/circle/circle.c
+++ b/example/circle/circle.c
@@ -193,7 +193,7 @@ main (int argc, char **argv)
   /* process command line arguments */
   usage = "Arguments: <level>\n";
   wrongusage = 0;
-  if (!wrongusage && argc < 3) {
+  if (!wrongusage && argc != 2) {
     wrongusage = 1;
   }
   config = P4EST_CONFIG_CIRCLE;