What is a Pseudocode?

Pseudocode is one of the tools that can be used to write a preliminary plan that can be developed into a computer program. Pseudocode is a generic way of describing an algorithm without use of any specific programming language syntax. It is, as the name suggests, pseudo code —it cannot be executed on a real computer, but it models and resembles real programming code, and is written at roughly the same level of detail.

Pseudocode, by nature, exists in various forms, although most borrow syntax from popular programming languages (like C, Lisp, or FORTRAN). Natural language is used whenever details are unimportant or distracting.

Click the image below to see examples

Computer science text books often use pseudocode in their examples so that all programmers can understand them, even if they do not all know the same programming languages. Since pseudocode style varies from author to author, there is usually an accompanying introduction explaining the syntax used.

In the algorithm design, the steps of the algorithm are written in free English text and, although brevity is desired, they may be as long as needed to describe the particular operation. The steps of an algorithm are said to be written in pseudocode. Many languages, such as Pascal, have a syntax that is almost identical to pseudocode and hence make the transition from design to coding extremely easy.

In next sections deal with the control structures (control constructs) Sequence, Selection and Iteration or Repetition.


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