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The FizzBuzz test

Main articles: Programming language and List of programming languages

Different programming languages support different styles of programming (called programming paradigms). The choice of language used is subject to many considerations, such as company policy, suitability to task, availability of third-party packages, or individual preference. Ideally, the programming language best suited for the task at hand will be selected. Trade-offs from this ideal involve finding enough programmers who know the language to build a team, the availability of compilers for that language, and the efficiency with which programs written in a given language execute. Languages form an approximate spectrum from “low-level” to “high-level”; “low-level” languages are typically more machine-oriented and faster to execute, whereas “high-level” languages are more abstract and easier to use but execute less quickly. It is usually easier to code in “high-level” languages than in “low-level” ones.

Allen Downey, in his book,”How To Think Like A Computer Scientist”, writes:The details look different in different languages, but a few basic instructions appear in just about every language:

  • Input: Gather data from the keyboard, a file, or some other device.
  • Output: Display data on the screen or send data to a file or other device.
  • Arithmetic: Perform basic arithmetical operations like addition and multiplication.
  • Conditional Execution: Check for certain conditions and execute the appropriate sequence of statements.
  • Repetition: Perform some action repeatedly, usually with some variation.

Many computer languages provide a mechanism to call functions provided by shared libraries. Provided the functions in a library follow the appropriate run-time conventions (e.g., method of passing arguments), then these functions may be written in any other language