Step-1: For the current node, verify whether it contain a left child. If it has, then go to step-2 or else go to step-3

Step-2: Repeat step-1 for left child

Step-3: Visit (that means printing the node in our case) the current node

Step-4: For the current node verify whether it contain a right child. If it contain, then go to step-5

Step-5: Repeat step-1 for right child

Figure: A binary tree

The preoreder & postorder traversals are similar to that of a general binary tree. The general thing we have seen in all of these tree traversals is that the traversal mechanism is recursive inherently in nature.