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Include Code from Another File Directive
#include
Syntax
#include "filename"
or
#include <filename>
Description
The #include directive tells the preprocessor to read source statements from
another file. The preprocessor includes (at the point in the code where
#include is encountered) the contents of the filename, which are then pro-
cessed. You can enclose the filename in double quotes or in angle brackets.
The filename can be a complete path name or a filename with no path in-
formation.
CD
If you provide path information for filename, the preprocessor uses
that path and does not look for the file in any other directories.
o
If you do not provide path information and you enclose the filename
in double quotes, the preprocessor searches for the file in:
1)
The directory that contains the current source file. (The current
source file refers to the file that is being processed when the
preprocessor encounters the #include directive.)
2)
Any directories named with the -i preprocessor option.
3)
Any directories named with the C-DIR environment variable.
(i)
If you do not provide path information and you enclose the filename
in angle brackets, the preprocessor searches for the file in:
1)
Any directories named with the -i preprocessor option.
2)
Any directories named with the C-DIR environment variable.
Note:
If vou enclose the filename in angle brackets, the preprocessor d'1es not
search tor the file in the current direc'
For more information about the -i option and the environment variable, read
Section 3.1.3 on page 3-4.
8-5
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