Programming - HP NW280-200X User Manual

Programming

HP Prime
Programs
Command
Structure
Programming
This chapter describes how to program the HP Prime. In
this chapter you'll learn about:
programming commands
•
writing functions in programs
•
using variables in programs
•
executing programs
•
debugging programs
•
creating programs for building custom apps
•
sending a program to another HP Prime
•
An HP Prime program contains a sequence of commands
that execute automatically to perform a task.
Commands are separated by a semicolon ( ; ).
Commands that take multiple arguments have those
arguments enclosed in parentheses and separated by a
comma( , ). For example,
PIXON (xposition, yposition);
Sometimes, arguments to a command are optional. If an
argument is omitted, a default value is used in its place. In
the case of the PIXON command, a third argument could
be used that specifies the color of the pixel:
PIXON (xposition, yposition [,color]);
The last argument indicates which of four colors to use
when lighting up the pixel. Here, the default value is 0
(black). In this manual, optional arguments to commands
appear inside square brackets, as shown above. In the
PIXON example, a graphics variable (G) could be
specified as the first argument. The default is G0, which
always contains the currently displayed screen. Thus, the
full syntax for the PIXON command is:
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