- An API (Application Program Interface) is a series of functions that programs can use to make the operating system do their work. Using Windows APIs, for example, a program can open windows, files, and message boxes --as well as perform more complicated tasks-- by passing a single instruction. Windows has several classes of APIs that deal with telephony, messaging, and other issues.
- The specific method prescribed by a computer operating system, or by another application program, by which a programmer writing an application program can make requests of the operating system or another application. Unlike a GUI (graphical user interface), which is a direct user interface, the API interfaces with an operating system or a program.
- An application program interface is the software interface to system services or software libraries. An API can consist of classes, function calls, subroutine calls, descriptive tags, etc.
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What Is An API
2008-11-23
API- Application Programming Interface
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Hi Asif, in your blog on “what is API ?” you have explained how API is used by various operating system. What, if a program has to run on two different versions. Well in such case, you would require a customized API. You can easily get customized APIs on Teligy - Technology Development Company (http://www.teligy.com/). The website also offers to extend your existing API to support proprietary functionality.
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