HP 3000 Manuals HP 3000 Manuals
Referencing Library Header Files
To reference the HP C/iX library header files, place the #include
preprocessor directive in your source code. The order of inclusion of
the header files is of no significance. The same header file may be
included more than once in the same program without generating errors.
The syntax for including a HP C/iX library header file is:
#include <libraryname.h>
By enclosing libraryname in angle brackets, you instruct the HP C/iX
preprocessor to look for that header file in the H group of the SYS
account.
For example, if you want to use the fprintf function, which is in the
standard I/O library, your program must specify:
#include <stdio.h>
The declaration of fprintf, various types, and variables used by the I/O
function, are found in the stdio.h header file.
Header file identifiers beginning with an underscore (_) are reserved for
library use. You should not create identifiers that begin with an
underscore within your own source code.