4.4.1.9 Decomposition and 4.4.1.10 Composition

Question 1

What is procedural decomposition?

Answer 1

breaking a problem into a number of sub-problems, so that each sub-problem accomplishes an identifiable task, which mightitself be further subdivided

Question 2

What is composition?

Answer 2

putting pieces back together, the opposite of the decomposition
incorporating multiple objects/functions to create a single, more complex object/function