Introduction to Web Programming Limitations of Procedural-Oriented Programming

Procedural-oriented programming is actually very powerful, so don't let the hype make you think that it has no place in your arsenal of programming tools.

Like libraries, languages, and toolkits, methodologies are just ways to solve certain sets of programming problems. There is no such thing as an all -powerful methodology. In some cases, the object-oriented approach will be best suited to your needs and in others, another methodology might be more appropriate.

PS: A well written procedural-oriented program can actually be easy to understand. It is just that well written procedural code is hard to find, especially when 'teams' of programmers, working on multiple versions are involved. The fact is that procedural languages typically lack the syntactic sugar necessary to enforce abstraction

Greg Smith sent in the following excellent comments...

It was good to see "Limitations of Procedural-Oriented Programming" but spagetti is the result of goto'ing all over the place ("goto"ing, "exit"ing, "leave"ing, "break"ing etc.). The single strand / thread, of control, whatever, is lost.

Programs written without the abortions of logic can be read, understood, debugged, etc. in half the time. (a paper witten back in the 60's was the first recognition of the problem and it outlined the new "structured" approach which from then on has been the known preffered method).

Again, OOP can offer almost the same benefit on top of that . . . if still, the rules of structure, are followed, and not the spagetti of goto's, etc. Unfortunately, all languages still support most, if not all, of the options for making spagetti out of what could have been structured code. just as C++ offers the ability to use OOP methods, but does not require it. (in C the case statement seems to be written so as to nearly require "break"ing)


F I R S T
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THE 3 BASIC PROGRAMMING CONSTRUCTS:
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1. SEQUENCE consegutive
2. BRANCH if - else
3. LOOP do while
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Basics of structured programming:

  • there are no goto's, jumps, iterates, etc.
  • all loops terminate at the bottom. ((the condition may be at the top))
  • there are no infinite loops.

Structured code is easier to write, debug, and maintain than the "spagetti" world of goto's, iterates, and exits that preceeded. Once it was discovered, in the early 60's, that the time involved in programming could be cut in half by following the rules given above, there has been no defensible justification for doing otherwise, though "spagetti" persists.


S E C O N D - OOP
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Object Oriented Programming is a methodology that gives great importnace to relationships between objects rather than implementation details. This distinction is important and like Structure above, can make code easier to write and maintain.

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