Thread: 'FILE fp is private within this context'

You fix it by properly compiling:

Originally Posted by anon

Or in other words, since you say you are getting linker errors it means that you must be compiling only main.cpp and not any of the other files.

So again, have you created a project with Dev-C++ and added all the cpp files to it? You can compile single-file programs without a project but you need one if you have more files.

Edit: If you're compiling on the command line, you need to specify all the .cpp files.