Hi, <br><br>I'm new to all this SRFI stuff and I don't understand how I would implement this into Scheme. <br><br>I have this code:<br><br>(require (lib &quot;42.ss&quot; &quot;srfi&quot;))<br><br>(define (two-power n)<br>
&nbsp;&nbsp; (max-ec (:while (: i n)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (zero? (remainder n (expt 2 i))))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i))<br><br>(define (hanoi m)<br>&nbsp;&nbsp; (list-ec (: n 1 (expt 2 m))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (+ (two-power n) 1))) <br><br>this is an iterative version of the hanoi towers. Sorry if this is an easy question but how do I get this to work in Scheme without getting a *define* errors. 
<br><br>if anyone can rewrite this procedure without the SRFI syntax, it will be very helpful. I want to see how it would look without the simple one line but instead seeing the entire procedure instead of just max-ec and list-ec. 
<br><br>By the way, the extra procedures are very helpful but I just want to see the difference between the SRFI syntax and the procedure with the regular Scheme language. <br>