HP SunSoft Pascal 4.0 manual include Directive, Pascal Preprocessor 259

A

The program unit,

include_prog.p

Comments

expression consists of a conditional variable and the optional boolean operators and, or, and not. See the %else listing for examples of expression.

%ifdef is especially useful for determining whether or not a conditional variable has been declared in an include file.

Example

See the example in “The %elseifdef Directive.”

The %include Directive

The %include directive inserts lines from the specified file in the input stream.

Syntax

%include 'filename';

Comments

When cppas encounters the %include directive, it inserts the lines from the file name into the input stream.

Example

program include_prog;

%include 'extern.h';

begin

global := 1;

writeln('From MAIN, before PROC: ',global); proc;

writeln('From MAIN, after PROC: ',global); end. { include_prog }

Pascal Preprocessor 259