To use bits/stdc++.h preprocessor in Visual Studio you need to download the stdc++.h file from the given below link.
Download file from the following link: https://mega.nz/file/feIXkY7a#ECkj1bZKA-72dYzatuKsgBQJ4lMe0v81sfxuhyKCNk0
Create bits folder in the following directory: C:Program Files (x86)Microsoft Visual Studio2019CommunityVCToolsMSVC14.28.29333include
Copy stdc++.h to the bits folder
Restart Visual Studio if it is running and use it
[This file](https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/include/precompiled/stdc%2B%2B.h)
Inside the directory /usr/local/include/
Create a directory named bits (mkdir bits)
Create stdc++.h file (touch stdc++.h or vim stdc++.h)
Paste the contents of the stdc+.h file here
or
Inside the directory /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/
Create a directory named bits (mkdir bits)
Create stdc++.h file (touch stdc++.h or vim stdc++.h)
Paste the contents of the stdc+.h file here