How to get the %AppData% folder in C?

Question

As above, how do I get the AppData folder in Windows using C?

I know that for C# you use Environment.SpecialFolder.ApplicationData

Answer 1

Using the %APPDATA% environment variable will probably work most of the time. However, if you want to do this the official Windows way, you should use use the SHGetFolderPath function, passing the CSIDL value CSIDL_APPDATA or CSIDL_LOCAL_APPDATA, depending on your needs.

This is what the Environment.GetFolderPath() method is using in .NET.

EDIT: Joey correctly points out that this has been replaced by SHGetKnownFolderPath in Windows Vista. News to me :-).