Driver Code
int main ( ) { TreeNode * root = new TreeNode ( 341 ) ; root -> left = new TreeNode ( 241 ) ; root -> right = new TreeNode ( 123 ) ; root -> left -> left = new TreeNode ( 324 ) ; root -> left -> right = new TreeNode ( 235 ) ; root -> right -> right = new TreeNode ( 161 ) ; makeInc ( root ) ; }