Binary_Tree_Alphabet

C program to demonstrate binary tree with Traversal.

This is a special case of binary tree with traversal-alphabet.

      Q:Demo - A -999       { A should be the root node.
               A B C -999   { A is the parent node, B is the left child ,C is the right child.
               B NULL D     { B is the parent node, left child is NULL , D is the right child.
               C F NULL     { C is the parent node, F is the left child , right child is NULL.
               -999         { Exit with traversal}


   Soln: Inorder-Traversal : B D A F C