title: How to check if int array object is empty in C#?
body: <p>I have an array of int grades[5].
  I have a loop that checks the objects of the array one by one to see if they're empty.
  I used:</p>
  
  <pre><code>if (grades[i] != null)
  </code></pre>
  
  <p>I get an error message that an int object is never "null" and therefor this expression always returns "true."
  If not "null," how do I check to see if a specific object in the array is empty?</p>
  
  <p>Thanx a lot for the help!</p>