[Courses] C Programming For Absolute Beginners, Lesson 1: Setting Up, First Program

[Kathryn Hogg]

On 2012-02-05 23:58, jim wrote:
> Aha (with thanks). There's the difference between
> #include < xyz.h >
> and
> #include " ../../jersey/work/include/myxyz.h "
>
>     The  < >  uses the  include  path whereas
> the  "  "  specifies some relative or absolute path
> to some file.

That's close.  All that really happens is that "." is added to include 
path when you use double quotes.  Please note that the directory is the 
directory that the file doing the #include is located in.  This may be 
different than the .c file you are compiling in if a header file is the 
one doing the #include "file.h".

In your case, it was searching for

"./../../jersey/work/include/myxyz.h".  Assuming it finds that file, 
all is well and good.  If it doesn't, it tries all the directories in 
your include path .

>     Also, the file to be included can be any text
> file, yes? Although no sense in #include-ing a file
> that doesn't follow the rules of the C language, as
> such would cause compile errors and failure.

The preprocessor just includes whatever while you give it.  If it has 
syntax errors, you will be notified.



-- 
Kathryn Hogg
http://womensfooty.com