Hi everybody..

I have this error messages:

LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/calendarType.exe : fatal error LNK1120: unresolved externals
Error executing link.exe.

I do not know what to do please help!!!

You give too little info here, but my guess is one of the two: you have an invalid or non-standard declaration of int main() or you are trying to compile your own lib as an application (this can be changed in project settings).