I need help in C$++$ with the tree attached. I can't figure out how to test the code for a binary decision tree in Visual Studio. The code must ask the user for a filename, open and read a file with the provided name, with $.$txt$$ appended to it$.$ For example, if the user provides the file name $$tree$",$ the program must open and read the file $$tree$.$txt$.$ The file must contain a textual description of a binary decision tree as in the example above. The tree must have at least five question nodes; there is no upper limit$.$

After reading the file, the program must walk the user through the tree until a decision is reached. The program must use at least one function, which should read the provided file and return a tree. This function must be present in a separate file. The prototype of this

function should be: vector readtree$($ifstream &$)$;

The function argument is an input file stream; the function assumes that the file was already opened successfully, so it can start reading from the stream directly. A header file must be provided.