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SE250:lab-8:jhor053 - Revision history
2026-04-29T03:38:40Z
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Mark: 11 revision(s)
2008-11-03T05:20:28Z
<p>11 revision(s)</p>
<p><b>New page</b></p><div>==Lab 8==<br />
<br />
===Task1===<br />
Got the errors ironed out as well as the [[250:lab-8:graphvizsoln |graph printing ]]<br />
<br />
===Task2===<br />
<html><img src="http://www.gotmilk.co.nz/~gm_modnar/250labs/lab8/task2b.jpg" border="0" /></html><br />
Well it worked good with:<br />
<pre>ParseTree* t = mkNode( '-', mkNode('-', mkNode('a', 0), mkNode('b', 0), 0 ), 0);<br />
prefix_tree(t);<br />
tree_to_graph(t, "task2b.jpg");</pre><br />
<br />
Hint: remember the 0 as a supressor<br />
<br />
===Task3===<br />
<br />
<html><img src="http://www.gotmilk.co.nz/~gm_modnar/250labs/lab8/task3a.jpg" border="0" /></html><br />
<br />
<br />
From:<br />
<pre> ParseTree* t = mkNode('?', mkNode('>', mkNode('+',mkNode('a', 0),mkNode('b', 0), 0), mkNode('c', 0) , 0 ), <br />
mkNode('*', mkNode('z', 0), mkNode('+', mkNode('y', 0), mkNode('b', 0), 0), 0), <br />
mkNode('?', mkNode('=', mkNode('a', 0), mkNode('2', 0), 0), mkNode('-', mkNode('x', 0), mkNode('y', 0), 0), <br />
mkNode('-', mkNode('y', 0), mkNode('x', 0), 0), 0)<br />
, 0 );<br />
prefix_tree(t);<br />
tree_to_graph(t, "task3a.jpg");</pre><br />
<br />
Gives:<br />
<pre>?(>(+(a b) c) *(z +(y b)) ?(=(a 2) -(x y) -(y x)))</pre><br />
<br />
===Task4===<br />
<br />
===Task5===<br />
<br />
===Task6===<br />
<br />
===Conclusion===<br />
Well a good lab overall and quite interesting to get graphviz going again :D<br />
<br />
Anyway will draw task 4 on my tablet soon. I AM A GOOGLEPLEX.</div>
Mark