错误C2228：表达式必须具有类类型

Question

I feel like this should be very easy portion of my project but I don't see how to fix this error. Does the error involve misuse of the pointer on *fout.open?

void GetOutput(std::ofstream * fout, std::string filename)
{

    *fout.open(filename, std::ios::out);

}

Answer 1

Do this:

(*fout).open(filename, std::ios::out);

or this:

fout->open(filename, std::ios::out);

But, really, both arguments to your function should be references, the second one should be a const reference.