What is the ipch folder and. SDF file?

C ++ development in Visual Studio 2010ProgramSome strange files are created, such as a folder named ipch and a folder with the same name as the project. the SDF file, and the files under ipch and. the number of SDF files is very large, at least 10 MB, and the number of large projects may exceed 100 mb. What are these files used? These files are saved by Visual Studio. Pre-compiled header files And Intelliisense Yes. Deleting these files has no effect on project development. What if I want to use pre-compiled header files and intelliisense, and do not want to see these boring files?

in Visual Studio, enter the following settings: Go to" Tools> op Tions, select "Text Editor> C/C ++> advanced", and find "fallback location ". Set "always use fallback location" and "Do not warn if fallback location used" to "true", for example:

To save these files to a specific folder, set fallback.
Location. Otherwise, Visual Studio uses the temporary folder of the system to save these files.

Restart Visual Studio and the annoying files will disappear. This setting is especially useful for people like me who use Dropbox to synchronize code.