   Help with OBJC++ or link for help
  I have been working in Objective-C for mAC OSX. I have a class that is made with OBJC++ so that i can use fstream as well as the cocoa framework.  the whole program compiles fine, but when ever I link to my Model header, all of a sudden fstream cannot be found and using namespace std; gives aparse error before namespace.  Can ne1 help me out? 