It would probably have been of more help to people to have a basic source code tutorial. If you're taking the time to make a basic calculator function program, you should assume the viewer has no knowledge or very limited knowledge of C++. You should explain implementing them pointers. It seems you just type stuff in without explaining why. Also, most people use source code only.
i dont think anyone using visual c++ would not have a good knowledge of regular c++. btw this isnt supposed to teach every little bit of the program, it just tells the viewer how to make the calculator. thanks for the feedback though.