Students' Guide to Program Design

Repetition

control

structures

5.1 Repetition using the DOWHILE

structure

The solution algorithms developed so far have one characteristic in

common - they show the program logic required to process just one

set of input values. However, most programs require the same logic to

be repeated for several sets of data. The most efficient way to deal with

this situation is to establish a looping structure in the algorithm. This

will cause the processing logic to be repeated a number of times.

In Chapter 2, the DOWHILE construct was introduced as the

pseudocode representation of a repetitive loop. Its format is:

DOWHILE condition p is true

statemen ...