Re: [Dev-C++] Newbie linking errors: 'undefined reference'

[Devin C. <dcc...@ya...>]

> It may be for 1000 reasons, e.g. wrong or absense of definition of
> ManVec, wrong operator[] definition for ManVec e.t.c..
>
> Had you included the .cpp file in the project? Also if you have the
> definition of a class in a .cpp file you must include a declaration of
> the class in the scope you use it. For example:

  I managed to solve the problem.  Three problems, actually, and all
within an hour - this has been holding me up several days.  Two were
not subtle; one was.
  The first I noticed was that I'd fogotten to give an important destructor
its due and had simply declared it as ~BaseBook();.  I'd forgotten
Destructors Need Definitions Too.  Whoops one.
  The second was when I investigated a called function, rather than the
calling function.  I thought the calling functions were the problem, since
they were all in the same place.  But it turns out one function really was
undefined.  Whoops two.
  The third was more confusing.  Apparently 'inline' isn't as benign as I've
been told.  Removing the 'inline' keyword from functions removed the
corresponding undefined reference errors.
  But it's working now, and I'm happy as a programmer in a room with no
lights sources other than a CRT.

> Yes i am sure it is noy error from the compiler... May i suggest a great
> C++ book? "The C++ Programming Language" 3rd Edition or Special Edition
> by Bjarne Stroustrup, the creator of C++. And he doesn't teaches only
> C++ but very useful techniques and software engineering. Definitely a
> great book!

  I have a problem in that area.  The university I live near has a wonderful
math faculty/CS department.  The library isn't good, but there are still
200+
titles dealing with C++.  But...they're all out.  The C++ section in the
library
is half a shelf.  Cobol has two whole shelves.  /Every/ primer or
introduction
to C++ is out, with a few second-rate exceptions (e.g., compiler-specific
books, ones that are years out of date, etc.)
  I think I'll recall them all.  Right before exams.

--Devin



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