CMake/Tests/SBCS/SBCS.cxx

// Test to verify that _SBCS being defined causes CharacterSet to be set to 0 (Single Byte Character Set)

int main ()
{
#ifdef _UNICODE
  bool UnicodeSet=true;
#else
  bool UnicodeSet=false;
#endif

#ifdef _MBCS
  bool MBCSSet=true;
#else
  bool MBCSSet=false;
#endif

  // if neither _UNICODE nor _MBCS is set, CharacterSet must be set to SBCS.
  bool SBCSSet=(!UnicodeSet && !MBCSSet);

  // Reverse boolean to indicate error case correctly
  return !SBCSSet;
}