Software Engineering and Testing

SYSTEM DESIGN 127

 Testing and debugging individual modules is easier because they can be dealt

with in isolation from the rest of the program.

 Bugs are easier to isolate and understand, and they can be fixed without fear

of intr

oducing problems outside the module.

 Well-composed modules are more reusable because they are more likely to

comprise part of a solution to many pr

oblems. Also, a good module should be

easy to extract from one program and insert into another.

Modularity is an important property of most engineering processes and

products. For example, in the automobile industry, the construction of cars proceeds

by assembling ...