小编Aas*_*bab的帖子

我有一个运算符重载的类,如下所示:

friend ostream operator<< (ostream &stream, const Item &item){
          stream << item.title << " - " << item.format << " (Loaned to " << item.name << ") on " << item.date;
          return stream;
    }

我的程序无法编译,并给我以下错误:

error C2248: 'std::basic_ios<_Elem,_Traits>::basic_ios' : cannot access private member declared in class 'std::basic_ios<_Elem,_Traits>'
1>        with
1>        [
1>            _Elem=char,
1>            _Traits=std::char_traits<char>
1>        ]
1>        c:\program files (x86)\microsoft visual studio 8\vc\include\ios(151) : see declaration of 'std::basic_ios<_Elem,_Traits>::basic_ios'
1>        with
1>        [
1>            _Elem=char,
1>            _Traits=std::char_traits<char>
1>        ]
1> …

为了从给定路径获取父目录，我有以下代码。注：为size_t是一种类型定义为unsigned int类型。

/****************************************************
This function takes a full path to a file, and returns
the directory path by returning the string up to the last backslash.

Author: Aashish Bharadwaj
*****************************************************/
_TCHAR* GetDirectoryFromPath(const _TCHAR* path)
{
   size_t size = _tcslen(path);
   size_t lastBackslash = 0;
   for (size_t i = 0; i < size; i++)
   {
      if (path[i] == '\\')
      {
         lastBackslash = i;
      }
   }

   _TCHAR* dirPath = new _TCHAR();
   size_t i;
   for (i = 0; …