Introduction - If you have any usage issues, please Google them yourself
Menu functions in program are as follows: 1------ 2------ before establishing a binary tree preorder preorder recursive algorithm 3------ 4------ non-recursive algorithm preorder recursive algorithm 5------ preorder recursive algorithm after preorder non-recursive algorithm 6------ preorder after non-recursive algorithm 7------ 8------ seeking seeking total tree height 9------ 10----- output binary leaves 11----- exit