What is the relationship between the Windows API and the C run time library?
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What is the relationship between the Windows API and the C run time library?
In a nutshell: The Windows API contains all the functions defined specifically for Windows. The C run-time library contains all the functions that are required by standard C.
The physical libraries that implement these functions may be a single file (library), split across two separate libraries or split into many libraries, depending on the operating system and the actual API/service you are using.
For example, when creating files, the C standard includes the function:
fopento open and create files, etc., while the Win32 API (for example) defines functions like:
CreateFileto create and manipulate files. The first one will be available wherever a standard C run-time library is available while the second one will only be available on a Windows machine that supports the Win32 API.