Students' Guide to Program Design

Modularization

repetition will stop, and control will pass to the statement after

ENDDO. (Print total patients, total charges.)

However, instead of performing all the activities

itself,

this mainline

calls on a series of modules to perform the tasks. The mainline will

pass control to a module which will

perform

a task. When the module

has reached its end it will pass control back to the mainline, which will

then pass control to the next module and so on.

Note that the name of each module describes the specific function

for which it is intended. Without knowing the contents of any of the

modules, a programmer can read this mainline and obtai ...