C is actually a free format language. This means that there are no rules
about how it must be typed, when to start new lines, where to place brackets
or whatever. This has both advantages and dangers. The advantage is that
the user is free to choose a style which best suits him or her and there is
freedom in the way in which a program can be structured. The disadvantage
is that, unless a strict style is adopted, very sloppy programs can be the
result. The reasons for choosing a well structured style are that:

• Long programs are manageable only if programs are properly organized.

• Programs are only understandable if care is taken in choosing the namesof variables and functions.

• It is much easier to find parts of a program if a strict ordering conventionis maintained. Such a scheme becomes increasingly difficult to achievewith the size and complexity of the problem.

No simple set of rules can ever provide the ultimate solution to writing
good programs. In the end, experience and good judgement are the factors
which decide whether a program is written well or poorly written. The main
goal of any style is to achieve clarity. Previously restrictions of memory
size, power and of particular compilers often forced restrictions upon style,
making programs clustered and difficult. All computers today are equipped
with more than enough memory for their purposes, and have very good
optimizers which can produce faster code than most programmers could
write themselves without help, so there are few good reasons not to make
programs as clear as possible.
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