On Windows, SAP_UC is equivalent to wchar_t, so you can replace the functions from sapuc.h/libsapucum.dll with the corresponding standard Microsoft functions from wchar.h.
E.g. printfU() --> wprintf(), getcU() --> _getws(), etc. (In fact, on Windows you even have to use this alternative, if using a Visual Studio release newer than 2005... This is also mentioned at the end of note 1056696. See also my answer a few comments further up... 
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