title: Permission denied when running C program
body: <p>I am trying to run this basic file (ex1.c) with zsh</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  int main(int argc, char *argv[])
  {
      puts("hello world.");
  
      return 0;
  }
  </code></pre>
  
  <p>I am getting this error:</p>
  
  <pre><code>zsh: permission denied: ./ex1.c
  </code></pre>