Thread: trouble outputing string object to screen.

Code:

 void ListFileMem(StudentRecord** Records, int numRecords){
	cout<<"LIST RECORDS FROM MEMORY";
	string fullname, firstname, lastname;
	if (numRecords>0)
	{
		for (int k=0; k<numRecords;k++)
		{
			firstname=Records[k]->firstName;
			firstname+=" ";
			lastname=Records[k]->lastName;
			fullname=firstname;
			fullname+=lastname;
			cout<< fullname; //compiler does not like this. why? //line 269
			//cout<<"Record"<<k<<"\n\t"<<"Name: " << fullname;cout<<"\n\t"<<"ID:"<<Records[k]->id
			//	<<"  "<<"Mark:"<<Records[k]->mark<<endl;;
		}
      }
	else
	
		cout<<"memory empty, unable to list\n";




}

Code:

getting error message from ms 2003 compiler:
n:\assignment0.cpp(269): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

what is wrong?