title: Library using another library
body: <p>I'm writing library for smart home arduino DIY project.<br>
  i want to use another library(not written by me).<br>
  here is the code:  </p>
  
  <p>boiler.cpp</p>
  
  <pre><code>#include "Boiler.h"
  
  Boiler::Boiler(int pin)
  {
      _pin = pin;
      dev.setDevice(_pin);                    // Set Device Output (on/off)
      turnOff();
  }
  </code></pre>
  
  <p>boiler.h  </p>
  
  <pre><code>#ifndef BOILER_H_
  #define BOILER_H_
  
  // include RF24 libs
  #include "RF24.h"
  #include "RF24Network.h"
  #include "RF24Mesh.h"
  #include &lt;SPI.h&gt;
  
  // SmartHome Lib Includes
  #include "Device.h"
  #include "TimerOne.h"
  #include "timeSet.h"
  
  
  
  class Boiler 
  {
  
      private:
  
          RF24 radio(7, 8);
          RF24Network network(radio);
          RF24Mesh mesh(radio, network);
  
          int _pin ;
  
          void timerIsr();
          void DrawSCR();
      public:
          .
          .
          .
  
          Boiler (int pin );
          void turnOn();
          void turnOff();
  };
  </code></pre>
  
  <p>The problem is it's not compiling<br>
  the error I get is :<br>
  Boiler.h: 32:14: error: expected identifier before numeric constant<br>
  RF24 radio(7, 8)  </p>
  
  <p>What am i doing wrong?
  Thanks,</p>