What is the difference between API and SDK?

API is the interface SDK is the development package is not clear what is the difference between the two can be described in detail? When to use the API when to use the SDK

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Conceptually, the SDK is a combination of a series of files, including Lib, DLL,. h, documentation, examples, and so on, and the API is for programs that provide user-programmed interfaces, a series of modular classes and functions. You can think of the API as being included in the SDK.

API is the interface SDK is the development package is not clear what is the difference between the two can be described in detail? When to use the API when using the SDK can assume that the API is a URL address and then add the parameters to understand it?

If you specifically refer to the PRC application, so to speak

Reference landlord Zhiyuanzheliuzhaojun reply: API is the interface SDK is the development of the package is not clear what the difference between the two can be described in detail? When to use the API when using the SDK can assume that the API is a URL address and then add the parameters to understand it? What is the PRC application

I'm sorry I wrote it wrong, RPC.
RPC (Remote Procedure call Protocol)?? A remote procedure call protocol, which is a protocol that requests services from a remote computer program over a network without needing to know the underlying network technology. The RPC protocol assumes that some transport protocols exist, such as TCP or UDP, to carry information data between communication programs. In the OSI network communication model, RPC spans the transport and application tiers. RPC makes it easier to develop applications that include distributed, multi-program networks.

The SDK is a collection of APIs-------personal humble opinion.

Reference 2 floor Zhiyuanzheliuzhaojun reply: Reference landlord Zhiyuanzheliuzhaojun reply: API is the interface SDK is the development package is not clear what is the difference between the two can be described in detail? When to use the API when using the SDK can assume that the API is a URL address and then add the parameters to understand it? What is the PRC application
What other types of applications are available besides RPC applications

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