title: system() copy fails, while cmd copy works
body: <p>In cmd.exe, I can execute the command "copy c:\hello.txt c:\hello2.txt" and it worked fine.
  But in my C program, I ran this piece of code and got the following error:</p>
  
  <pre><code>#include &lt;iostream&gt;
  
  using namespace std;
  
  int main()
  {
      system("copy c:\hello.txt c:\hello2.txt");
      system("pause");
  
      return 0;
  }
  </code></pre>
  
  <p>Output:
  The system cannot find the file specified.</p>
  
  <p>Anybody know what is going on here?</p>