Basic Principles of Structured Programming
- A Quick Overview. Programming involves the creation of a series of lines, called code, which a computer executes. ...
- Principles of Structured Programming. The base composition of any type of structured programming includes three fundamental elements. ...
- Comparison to Object Oriented Programming. ...
- Summary. ...
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Structured programming is a programming paradigm aimed at improving the clarity, quality, and development time of a computer program by making extensive use of the structured control flow constructs of selection (if/then/else) and repetition (while and for), block structures, and subroutines.
A structured programming language facilitates or enforces structured programming practices. These practices can also be supported with unstructured languages, but that will require specific steps in program design and implementation. Structured programming practices thus date to the emergence of structured programming languages.
- Margaret Rouse
Principles of structured programming help define a “high level” programming language; these are human readable language codes. The alternative are low level languages, like Assembler, which are “close” to the hardware level and are full of cryptic symbolic code.
- Early history
Structured programming is a logical programming method that is considered a precursor to object-oriented programming (OOP). Structured programming facilitates program understanding and modification and has a top-down design approach, where a system is divided into compositional subsystems. Structured programming is a procedural programming subset that reduces the need for goto statements. In many ways, OOP is considered a type of structured programming that deploys structured programming techniques. Certain languages like Pascal, Algorithmic Language (ALGOL) and Ada are designed to enforce structured programming.
The structured programming concept was formalized in 1966 by Corrado Böhm and Giuseppe Jacopini, who demonstrated theoretical computer program design through loops, sequences and decisions. In the late 1960s-early 1970s, Edsger W.Dijkstra developed structural programming functionality as a widely used method, in which a program is divided into multiple sections with multiple exits and one access point.
Modular programming is another example of structural programming, where a program is divided into interactive modules.
Structured procedural programming: The next wave of programming principles in the middle of the 1960’s was strongly influenced by C.A.R. Hoare and E.W. Dijkstra. The programs were structured into functional units or sub-procedures.
Jackson structured programming (JSP) is a method for structured programming developed by British software consultant Michael A. Jackson and described in his 1975 book Principles of Program Design.
Structured programming (SP) is a technique devised to improve the reliability and clarity of programs. In SP, control of program flow is restricted to three structures, sequence, IF THEN ELSE, and ...
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Structured Programming Approach, as the word suggests, can be defined as a programming approach in which the program is made as a single structure.It means that the code will execute the instruction by instruction one after the other.
- KISS: Nobody in programming loves to debug, maintain, or make changes in complex code. “Keep It Simple, Stupid (KISS)“ states that most systems work best if they are kept simple rather than making it complex, so when you are writing code your solution should not be complicated that takes a lot of time and effort to understand.
- DRY: Duplication of data, logic, or function in code not only makes your code lengthy but also wastes a lot of time when it comes to maintaining, debug or modify the code.
- YAGNI: Your software or program can become larger and complex if you are writing some code which you may need in the future but not at the moment. “You Aren’t Gonna Need It (YAGNI)” principle states that “don’t implement something until it is necessary” because in most of the cases you are not going to use that piece of code in future.
- SOLID: The SOLID principle stands for five principles which are Single responsibility, Open-closed, Liskov substitution, Interface Segregation, and Dependency inversion.