[orangesilk]

Windows does have three libc, likely as a compability layer. their names are:

  * <forgotten something Windows 3.1>
  * msvcrt.dll, 2014
  * ucrt.dll (universal c runtime, since Windows 10)

[Joker_vD]

Those are not a compatibility layer with the OS. Heck, the all barely even provide proper access to the file system, ffs! The "msvcrt.dll" in the System32 folder is an ancient leftover from Microsoft-internal version of MSVC 6.0 or so, not intended for 3rd-party consumption.

At some point Microsoft got tired of maintaining binary-incompatible versions of its C runtime for different Visual Studios, so they started shipping UCRT with Windows itself... but you still don't need to touch that garbage for anything whatsoever.