HP C A.06.05 Reference Manual

What is HP C?

HP C Online Help

Chapter 1 5

HP C Online Help

Online help for HP C is available for HP 9000 workstation and server users. HP C Online

Help can be accessed from an HTML browser of your choice. It consists of HTML ﬁles that

contain the following reference and how-to information:

• What is HP C?

• Program organization

• Compiling & running HP C programs

• Optimizing HP C programs

• Parallel options & pragmas

• Data types & declarations

• Expressions & operators

• Statements

• Preprocessing directives

• Calling other languages

• Programming for portability

• Migrating C programs to HP-UX

• Error message descriptions

Prerequisites for using HP C Online Help

Before you can begin using HP C Online Help, you should review the following display and

browser information. Some reconﬁguration of your environment variables may be required.

• You must set the DISPLAY environment variable to a (graphical mode) value that can

accommodate the display of an HTML browser.

• You may set the BROWSER environment variable to point to the location of the your HTML

browser. If you do not do this, the compiler will automatically run the browser located in

/opt/ns-navgold/bin/netscape or in /opt/ns-communicator/netscape.

• You may set the CROOTDIR environment variable to specify the root directory of the online

help source. If CROOTDIR is not set, the URL of the HP C Online Help defaults to

file:/opt/ansic/html/guide/${LOCALE}/c_index.html. This default is based on the

assumption that the compiler binaries are located in /opt/ansic/bin.