Greetings!
I will be happy to help as this task (implementing a binary tree in c++ using arrays) fits my programming skills.
I'll write the code quickly (can start right after hiring, estimated task completion time - 1-2 days) as I'm an expert-level C/C++/C#/VB/VBA/PHP/JavaScript developer with 15 years of experience, familiar with both Visual Studio and GCC, have been writing code for Windows and *nix (Linux/BSD).
My knowledge of mathematics is strong, and I offer high-quality, low-price solutions.
Please hire me for robust, well-commented code that follows best programming practices.
I'm waiting for your response.
Thanks.