Students' Guide to Program Design

Modularization

7.1 Modularization

Throughout the previous six chapters, it has been emphasized that to

design a solution algorithm, a programmer must:

■ define the problem;

■ write down the control structures required to reach a solution;

and

■ devise a solution algorithm, which uses a combination of

sequence, selection and repetition control structures.

Many solution algorithms have been presented, and all have been

relatively simple; the finished algorithm has been less than one page in

length. As programming problems increase in complexity, however, it

becomes more and more difficult to consider the solution as a whole.

Given a complex problem ...