title: How to write if condition in #ifdef. for Staging. in objective-c
body: <p>I need to add one more condition inside this call <strong>Staging</strong>..</p>
  
  <p>how to do it in this condition.  </p>
  
  <pre><code>  #ifdef MYAPP_PRODUCTION
          buildMode = @"Production";
      #else
  
      #ifdef MYAPP_RELEASE
          buildMode = @"Release";
      #else MYAPP_DEBUG
         buildMode = @"Debug";
      #endif
      #endif
  </code></pre>
  
  <p>another is <code>MyApp_Staging</code> need to include in this if condition how to do this?</p>