摘要：
//model/book.cpp void book::operator=(const book &bk){ std::cout<<std::endl<<std::endl<<std::endl<<"Called operator assignment overloaded!" <<std::end 阅读全文
摘要：
//book.h #pragma once #ifndef __book_h__ #define __book_h__ #include <functional> #include <iostream> class book { public: book(const std::uint64_t& i 阅读全文