From 9d08e7574f71b561d93b8d7bc7f85b2fa4d18c71 Mon Sep 17 00:00:00 2001
From: koma <koma@koma.sh>
Date: Tue, 19 Jul 2022 21:07:48 +0200
Subject: [PATCH] add help

---
 main.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/main.cpp b/main.cpp
index a32d17b..075cd43 100644
--- a/main.cpp
+++ b/main.cpp
@@ -29,8 +29,12 @@ int main(int argc, char **argv)
     int tcount = 0;
     int maxiter = 0;
 
-    while ((c = getopt(argc, argv, "t:i:")) != -1) {
+    while ((c = getopt(argc, argv, "ht:i:")) != -1) {
         switch (c) {
+            case 'h':
+                std::cout << "Usage: " << argv[0] << " [-t] [thread count] " <<
+                    "[-i] [max iterations]" << std::endl;
+                exit(0);
             case 't':
                 targ = optarg;
                 break;