Need help with assignment :( . c++ code

Question

Binary Search Tree
Create a program that accepts string as an input. The program will determine how many nodes the user wants to enter. After the strings are entered, the program will create a binary search tree and output the following traversals: Pre-order, post-order, and in-order. Assume that N is the number of nodes, N should be <= 20 and >=0. Do not forget to output also the binary search tree before the traversals.

Answer 1

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Answer 2

As Manual mentioned, you need to post what you've already tried, any errors, etc... so that we can properly help you. We aren't here to do your homework for you, but we're more than happy to help you with concepts/errors you get stuck on.