定义类News，其中包括五个私有变量

请问这个用C++怎么写呢?定义类之后那个get(),set()函数怎么写呢？

class News {
public:
    News(int newsid, std::string newstitle, std::string newscontent, std::string newsauthor, bool isavailable)
    {
        this->newsid = newsid;
        this->newstitle = newstitle;
        this->newscontent = newscontent;
        this->newsauthor = newsauthor;
        this->isavailable = isavailable;
    }
    void set_newsid(int newsid)
    {
        this->newsid = newsid;
    }
    int get_newsid()
    {
        return newsid;
    }

    void set_newstitle(std::string newstitle)
    {
        this->newstitle = newstitle;
    }
    std::string get_newstitle()
    {
        return newstitle;
    }

    void set_newscontent(std::string newscontent)
    {
        this->newscontent = newscontent;
    }
    std::string get_newscontent()
    {
        return newscontent;
    }

    void set_newsauthor(int newsid)
    {
        this->newsauthor = newsauthor;
    }
    std::string get_newsauthor()
    {
        return newsauthor;
    }

    void set_isavailable(bool isavailable)
    {
        this->isavailable = isavailable;
    }
    
    bool get_isavailable()
    {
        return isavailable;
    }

private:
    int newsid;
    std::string newstitle;
    std::string newscontent;
    std::string newsauthor;
    bool isavailable;
};