title: How to use System(const char*) in TC++
body: <p>Today , When i coding, met a question..my Code as follow:</p>
  
  <pre><code>#include&lt;stdlib.h&gt;
  
  void main()
  {
      system("dir");
      getch();
  }
  </code></pre>
  
  <p>The question : The user Screen is nothing..Why ?  where is my result? </p>