<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div>Please don't post complete solutions. </div><br><div><div>On Jul 29, 2011, at 4:55 PM, <a href="mailto:benmarkwell@gmail.com">benmarkwell@gmail.com</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><font color="#003300"><font size="2"><font face="tahoma,sans-serif">I am currently working on Structure Definitions and am hoping that I can get some feedback through this mailing list on whether I am doing things correctly or not.<br> <br></font></font></font><b>Exercise 6.4.3.</b>   Provide a structure definition and a data definition for representing three-letter <code class="scheme"><span class="variable">word</span></code>s. A word consists of letters, which we represent with the symbols <code class="scheme"><span class="keyword">'</span><span class="variable">a</span></code> through <code class="scheme"><span class="keyword">'</span><span class="variable">z</span></code>.  <br><br>Here is what I have come up with.<br><br>;; word : symbol -> symbol<br>;  produce a word with the letters it's made of.<br></blockquote><div><br></div><div><br></div><div>What is the above function for? </div><div><br></div><div><br></div><div>The rest is all you need. </div></div></body></html>