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Control structures and data structures are the stuff that programs are made of.
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Control structures and data structures are the stuff that programs are made of.
free computer programming text book projecttable of contents
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Control structures and data structures are the stuff that programs are made of.
This is an informal discussion that will serve as background so that the reader will understand the context of the next few chapters.
Simple variables are called elementary data items or scalar. These are data items that are treated as a single discrete unit in a programming language. Usually these are items that can be contained in a single element of the underlying hardware.
Data structures are any combinations of scalar items or other data structures. The combination of the underlying elementary data elements allow for more complex programming.
Many computer scientists view data structures as the fundaamental building blocks of programs rather than the program’s control structures.
Often the algorithm used in a program is determined by the data structures chosen, rather than the other way around.
Some of the important data structures are: character strings, arrays, structures or records, stacks, queues, lists, trees, graphs, and objects.
“31 Every object in the language has a type, which characterizes a set of values and a set of applicable operations. The main classes of types are elementary types (comprising enumeration, numeric, and access types) and composite types (including array and record types).” —:Ada-Europe’s Ada Reference Manual: Introduction: Language Summary See legal information
“2. Functions delay binding: data structures induce binding. Moral: Structure data late in the programming process.” —Alan Perlis, Epigrams on Programming, ACM’s SIGPLAN Notices Volume 17, No. 9, September 1982, pages 7-13
“5. If a program manipulates a large amount of data, it does so in a small number of ways.” —Alan Perlis, Epigrams on Programming, ACM’s SIGPLAN Notices Volume 17, No. 9, September 1982, pages 7-13
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Created: October 11, 2008
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