Programming Techniques; Routines In Programs - HP -32S Owner's Manual

6
Programming Techniques
Chapter 5 covered the basics of programming. This chapter delves
into more sophisticated but useful techniques:
• Using subroutines to simplify programs by separating and labeling
portions of the program that are dedicated to particular tasks. The
use of subroutines also shortens a program that must perform a
series of steps more than once.
• Using conditional instructions (comparisons and flags) to determine
which instructions or subroutines should be used in a particular
case.
• Using loops with counters to execute a set of instructions a certain
number of times.
• Using indirect addressing to access different variables using the
same program instruction.
Routines in Programs
A program is composed of one or more routines. A routine is a func
tional unit that accomplishes something specific. Complicated
programs need routines to group and separate tasks. This make§, a
program easier to write, read, understand, and alter.
90 6: Programming Techniques