title: error: expected identifier or '(' - c programming language
body: <p>I've been wracking my brain trying to figure this out for hours. I'm getting the following error for the code below:</p>
  
  <p>mario.c:5:1: error: expected identifier or '('</p>
  
  <pre><code>#include &lt;cs50.h&gt;
  #include &lt;stdio.h&gt;
  
  int main(void);
  
  int blocks = 0;
  do
  {
      int blocks = get_int();
      printf("%d\n", blocks);
  }
  while (blocks &gt; 23);
  </code></pre>
  
  <p>Anyone know what I'm doing wrong here?</p>