As far as I can tell, this interpreter doesn't even have std::string, and you can't define your own datatypes or allocate. The interpreter also doesn't handle

As far as I can tell, this interpreter doesn't even have std::string, and you can't define your own datatypes or allocate. The interpreter also doesn't handle pointers into arrays properly. I'm not familiar with other countries' curricula, but we had vectors and strings very early on when I learned C++. I like the general idea of the debugging interface, that could help a lot of people. But I think you should upgrade the interpreter. I don't know if that's possible while retaining the debugging interface, unfortunately.