Split the Code into Sections with Goals
The first step to understanding the code is to split it into sections and identify the goals of each section.
A section is a snippet of code that accomplishes a specific task. No specific number of lines constitute a section; it depends entirely on the code. A section can be one statement or function call, or it can be a loop with 30 lines of code in it. We can loosely define a section to be any sequence of program statements that accomplishes enough that you should take the time to define goals for it.
The “goal” of a section of code is the set of changes that the code is intended to make to the data structures used by the program. If a section is an entire function, the name of the function usually provides ...
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