title: Initializing an array after the declaration
body: <p>Why we cannot use array intializer after declaring an variable.</p>
  
  <p>For example:</p>
  
  <pre><code>int arr[];
  arr = {1,2,3,4};
  </code></pre>
  
  <p>But, </p>
  
  <pre><code>int arr[] = {1,2,3,4}; 
  </code></pre>
  
  <p>is correct.
  Is there any way to use array initialize after declaring an variable.</p>