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<b><font face="Arial, Helvetica, sans-serif" size="4" color="#FF0000">post_order_eval function</font><font face="Arial, Helvetica, sans-serif" size="4" color="#000000">
void <font color="#FF0000">post_order_eval</font>(tree_pointer node)
{ <i><font size="3" color="#CC0099"> /* modified post order traversal to evaluate a propositional
calculus tree*/</font></i>
if (node){
<font color="#FF0033">post_order_eval</font> (node->left_child);
<font color="#FF0033">post_order_eval</font> (node->right_child);
switch (node->data) {
case<font color="#FF0000"> not: </font>
node->value = !node->right_child->value;
break;
case <font color="#FF0000">and:</font>
node->value = node->right_child->value &&
node->left_child->value;
break;
case <font color="#FF0000">or:</font>
node->value = node->right_child->value ||
node->left_child->value;
break;
case<font color="#FF0000"> true:</font>
node->value = TRUE;
break;
case <font color="#FF0000">false:</font>
node->value = FALSE;
}
}
}</font></b>
<b><font face="Arial, Helvetica, sans-serif" size="4" color="#FF0000">exercises page 254/ 2</font></b>
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