What does api interface mean?

api interface means application programming interface, which is a number of predefined functions that are designed to provide applications and developers with the ability to access a set of routines based on certain software or hardware; good interface design It can reduce the interdependence of various parts of the system, improve the cohesion of the component units, and reduce the degree of coupling between the component units, thereby improving the maintainability and scalability of the system.

#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What does api interface mean?

API's full name in English is: Application Programming Interface, which means Application Programming Interface in Chinese. It is a number of predefined functions that are designed to provide applications and developers with access based on certain software or hardware. Group routine capabilities.

Application Programming Interface (English: Application Programming Interface, abbreviated as: API), also known as application programming interface, is an agreement for connecting different components of a software system. Since the scale of software has become increasingly large in recent years, complex systems often need to be divided into small components, and the design of programming interfaces is very important. In the practice of programming, the design of programming interfaces must first reasonably divide the responsibilities of the software system. Good interface design can reduce the interdependence of various parts of the system, improve the cohesion of the component units, and reduce the degree of coupling between the component units, thereby improving the maintainability and scalability of the system.

Main function:

The main purpose of the API is to provide applications and developers with the ability to access a set of routines without having to access the source code or understand the internals Details of the working mechanism. Software that provides the functionality defined by an API is called an implementation of this API. API is an interface, so it is an abstraction.

For example, a set of APIs in the graphics library defines how to draw pointers to display pointers on graphics output devices. When an application requires pointer functionality, it can link to this set of APIs at reference and compile time, and the implementation (library) of this API will be called at runtime to display pointers.

The application programming interface is a set of thousands of extremely complex functions and subroutines that allow programmers to do many tasks, such as "read files", "display menus", "display in windows" Web page" and so on. Operating system APIs can be used to allocate memory or read files. Many system applications are implemented through API interfaces, such as graphics systems, databases, network web services, and even online games.

Application programming interfaces come in many different designs. Interfaces for fast execution typically include functions, constants, variables, and data structures. There are other ways, such as through an interpreter, or by providing an abstraction layer to shield information related to the API implementation, ensuring that the code using the API does not need to be changed to adapt to implementation changes.

Application programming interfaces are often part of a software development kit (SDK).

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