C/Front: DBL_BCD : redefinition; different basic

Hi, I want to write a short tool wich writes data from a mySQL Database to our Navision, and I want to write this Tool in C/C++. I have an mySQL C++ API and C/Front, but if i would build the file I get an error from the CF.h file: d:\sourcecode\mysql_c++\examples\cf.h(53) : error C2371: ‘DBL_BCD’ : redefinition; different basic types d:\sourcecode\mysql_c++\include\cf.h(53) : see declaration of ‘DBL_BCD’ but I didn’t know, how to fix this. Has anybody seen this error before, and could help me?

Oh I included the Header two times, so the compiler throws an error.