diff --git a/examples/cpp/basic.cpp b/examples/cpp/basic.cpp
index 2ebb1504f97c..1652e26705ad 100644
--- a/examples/cpp/basic.cpp
+++ b/examples/cpp/basic.cpp
@@ -22,4 +22,5 @@ int main() {
   opendal::ReaderStream stream(reader);
   std::string res2;
   stream >> res2; // res2 == "abc"
+  std::cout<<res2<<std::endl;
 }
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