C++ Linking error

Question

I have multiple classes connected by hxx header files and inheritance.This is all about OS simulation. I compiled them individually to see if i get any syntax errors but that wa

Answer 1

Compiling individually is a reasonable test for syntax errors, but there's no point in linking individually, things WILL be missing.

So find the compiler option to compile without linking (Microsoft Visual C++: /c, g++: -c) and use it.

Answer 2

This error is telling you that there's no definition for the method JobCreationFactory::createFiles -- so either you forgot to define that in any file anywhere, or the file defining it is not being linked along with osTester.cxx.o (which is the file that calls it).