Point of sale C++ software

I tried doing a point of sale system using C++.
I did a console application that has two privileges
One for Admin who can add product, check available products, and sale product as well.
The second is the sales Rep who can only sale available products in stock.
I utilized some features in C++ like vector container, file stream and algorithm etc.
It was an interesting project which helped me in my process of mastering code optimisation and writing reusable codes.
I look forward to your contributions and comments.