C++自己实现的字符串类

自己实现的字符串类 class CMStringImp; class CMstring { public: explicit CMstring(void); ~CMstring(void); CMstring(LPCTSTR lpszstr); CMstring(const CMstring& lpszstr); CMstring& operator = (const CMstring& lpszstr); operator LPCTSTR() const; bool operator == (const CMstring&) const; bool operator !=