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<pre align="left"><font face="Arial, Helvetica, sans-serif" size="4" color="#000000"><b>
(3)<font color="#FF0000"> Level Order Traversal</font>
<i> <font color="#0033CC"> + * E * D / C A B </font> </i><img src="IMAGE/text5-m.gif" width="233" height="201" align="middle"></b></font></pre>
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<pre><font face="Arial, Helvetica, sans-serif" size="4" color="#000000"><b>void<font color="#FF0000"> level_order</font>(tree_pointer ptr)
<i><font size="3" color="#CC0099">/* level order tree traversal */</font></i>
{ int front = rear = 0;
tree_pointer queue[MAX_QUEUE_SIZE];
if (!ptr) return; <i><font size="3" color="#CC0099"> /*empty tree */</font></i>
addq (front, &rear, ptr);
for (; ;){
ptr = deleteq(&front, rear);
if (ptr) {
printf ("%d",ptr_data);
if ( ptr->left_child)
addq (front, &rear, ptr->left_child);
if ( ptr->right_child)
addq (front, &rear, tr->right_child);
}
else break;
}
}</b></font></pre>
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<pre><img src="IMAGE/levelorder.gif" width="224" height="329"></pre>
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