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I want to know which programming language has been used to code Windows OS. And is there a specific language programmers choose to make operating systems ?

Newbie_Programmer
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    http://stackoverflow.com/questions/580292/what-languages-are-windows-mac-os-x-and-linux-written-in – Blob Feb 21 '15 at 15:01

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As far as kernels go:

The windows kernel is written in C.

C is the only real choice in my opinion. C++ is too bloated and the exception model may be hard to work with. Assembly doesn't provide enough abstraction, and most everything else needs a VM.

Jonathon Reinhart
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  • Windows: C dialects.

  • Is there a specific language programmers choose to make operating systems?

    Yes. In general, low-level programming languages are preferred. You need to be "close to the hardware". But, after this base for an OS is layed, then higher-level languages, which provide more abstraction allow a faster development.

    http://wiki.osdev.org/Languages

  • If you want to get into "hobby" OS development a good starting point is: http://wiki.osdev.org/

Jens A. Koch
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According to some people at Microsoft, it is a mixture of C, C++ and C# (see MSDN forum)

Thomas Dickey
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