From fcf02ccd2a9c2415d217b6eb9a59395298cacab1 Mon Sep 17 00:00:00 2001
From: Zhuo Zhang <imzhuo@foxmail.com>
Date: Wed, 23 Dec 2020 23:31:15 +0800
Subject: [PATCH] add help message for simplepose example (#2495)

---
 examples/simplepose.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/simplepose.cpp b/examples/simplepose.cpp
index c5807325..8323292f 100644
--- a/examples/simplepose.cpp
+++ b/examples/simplepose.cpp
@@ -137,6 +137,12 @@ static void draw_pose(const cv::Mat& bgr, const std::vector<KeyPoint>& keypoints
 
 int main(int argc, char** argv)
 {
+    if (argc != 2)
+    {
+        fprintf(stderr, "Usage: %s [imagepath]\n", argv[0]);
+        return -1;
+    }
+
     const char* imagepath = argv[1];
 
     cv::Mat m = cv::imread(imagepath, 1);
-- 
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