初学c++,这个实在不知道要咋做，哪位大神帮个忙题目在下面 - C++教室 - C++论坛

#include "stdafx.h" #include<iostream> using namespace std; class homepage { private: char *photo; int height; int width; public: homepage(char*p, int h, int w) {} homepage() {} void set(char*p, int h, int w) {} homepage(homepage &hp) {} void print()const { cout << "photo:" << photo<< "," << "height:" << height << "," << "width:" <<width << endl; } ~homepage() { delete homepage; } }; homepage::homepage(char*p, int h, int w) { photo = p; height = h; width = w; } int main() { return 0; }

第 2 楼

得分:0

从你的上个帖子中的代码来看，你的老师教的是假C++（会点C，补点儿C++语法，就误以为自己会C++了）
所以我写个真正的C++代码，估计反而不能符合你老师的要求。

略尽人事吧

程序代码：

#include <iostream>
#include <cstring>

class homepage
{
public:
    homepage( const char* photo, int height, int width ) try : photo_(new char[strlen(photo)+1]), height_(height), width_(width)
    {
        strcpy( photo_, photo );
    }
    catch( ... )
    {
        throw;
    }

    homepage( const homepage& obj ) try : photo_(new char[strlen(obj.photo_)+1]), height_(obj.height_), width_(obj.width_)
    {
        strcpy( photo_, obj.photo_ );
    }
    catch( ... )
    {
        throw;
    }

    homepage( homepage&& obj ) noexcept : photo_(obj.photo_), height_(obj.height_), width_(obj.width_)
    {
        obj.photo_ = nullptr;
    }

    homepage& operator=( const homepage& obj )
    {
        if( this != &obj )
        {
            delete[] photo_;
            try {
                photo_ = new char[strlen(obj.photo_)+1];
            }
            catch( ... ) {
                throw;
            }

            strcpy( photo_, obj.photo_ );
            height_ = obj.height_;
            width_ = obj.width_;
        }
        return *this;
    }

    homepage& operator=( homepage&& obj ) noexcept
    {
        if( this != &obj )
        {
            delete[] photo_;
            photo_ = obj.photo_;
            height_ = obj.height_;
            width_ = obj.width_;

            obj.photo_ = nullptr;
        }
        return *this;
    }

    ~homepage()
    {
        delete[] photo_;
    }

private:
    char* photo_;
    int height_;
    int width_;

    friend std::ostream& operator<<( std::ostream& os, const homepage& obj )
    {
        return os << "photo = " << obj.photo_ << ", height = " << obj.height_ << ", width = " << obj.width_;
    }
};

using namespace std;

int main( void )
{
    homepage a = { "a", 1, 2 };
    cout << a << endl;

    homepage a2 = a;
    cout << a2 << endl;

    homepage a3 = std::move(a2);
    cout << a3 << endl;

    a = a3;
    cout << a << endl;

    a = std::move(a3);
    cout << a << endl;

    return 0;
}