Why am I getting the error: identifier 'last_code' cannot have a type qualifier?

[prathamnitika]

int food :: last_code(void)
{
   fstream file;
   file.open("FOOD.DAT", ios::in);
   file.seekg(0, ios::beg);
   int t=0;
   while(file.read((char *) this, sizeof(food)))
   t=itemcode;
   file.close();
   return t;
}

[Banfa]

The most likely answer is that last_code is not declared in food class definition as a member function. We would need to see the definition of class food to help much further.