I have 6 separate files, named (kInfo.cpp, informationGlobal.h, syscalls.h, syscalls.c, kroc.cpp, kroc.h). While using a make file, one of the files which contains all of the functions I am using and all of the code in the functions (kroc.cpp) is being declared out of scope. This is when calling on functions from the class file which just contains the functions and constructors (kroc.h). I am not quite sure why this is happening, and my implementation is shown below.