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 <p align="center">
   <a href="https://travis-ci.com/ybygjylj/cpp-primer-learning"><img src="https://travis-ci.com/ybygjylj/cpp-primer-learning.svg?branch=master" alt="Build Status"></a>
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+  <a href="https://github.com/topics/cpp"><img src="https://img.shields.io/badge/language-c++-blue.svg" alt="languange"></a>
+  <a href="https://gitter.im/learning-cpp/community"><img src="https://badges.gitter.im/Join%20Chat.svg" alt="chat"></a>
 </p>
 Solutions for C++ *Primer* 5th exercises.
 blue## Introduction