title: Does "const" just mean read-only or something more?
body: <p>What does <code>const</code> really mean? Read-only seems to encapsulate its meaning for me, but, I'm not sure I'm right.</p>
  
  <p>If read-only and <code>const</code> are different, could someone tell me why?</p>
  
  <p>What prompted this question was <a href="https://stackoverflow.com/questions/4024318#4024417">this answer</a> where he states <code>const</code> "just" means read-only in C. I thought that's <em>all</em> <code>const</code> meant, regardless of whether it was C or C++. What does he mean?</p>
  
  <p>For an answer to the specific differences in <code>const</code> in C vs C++, I've created a new question: <a href="https://stackoverflow.com/questions/4486442/how-does-const-differ-in-c-c">How does &quot;const&quot; differ in C and C++?</a> as per R..'s suggestion.</p>