title: Clarifying Return 0 and 1
body: <p>So returning <strong>0</strong> in a function <strong>(Not main)</strong> means <strong>false</strong> and returning <strong>1</strong> or anything but <strong>0</strong> means <strong>success</strong>.</p>
  
  <p>Why in the main() function do we put <strong>0</strong>, meaning there were no errors when <strong>1</strong> in other functions mean it ran successfully, thanks.</p>