The attention is drawn to the relationships written at certain points in the fl owchart. These relationships,
referred later as assertions, are very important from the view-point of proving the correctness of algorithms.
3.2 STRUCTURED PROGRAMMING
As structured programming is useful both in the development of the algorithm and in the implementation of
the program, we shall discuss it in detail. We have seen how some basic structured programming constructs—
sequence and while-do—arise in development of an algorithm. Now we consider all the usual structured
programming constructs. In chapter 4 we shall see how structured programming is implemented in pseudo-code
and C.
Why do we need a structured approach to programming? One ...
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