C++，实在不会了，请教一下

Question

题目1: 将以下代码拷贝到工程中:
//////////////////////////////////////////////////////////////////////

#include <vector>


class CMShape
{
public:
    CMShape();
    virtual void Output();

};

class CMPoint 
{
public:

    virtual void Output() {
        std::cout << "点:" << "坐标:" << x <<" "<< y<<endl;
    }

    double x, y;
};

//多段线
class CMPolyLine
{
public:

    void AddPoint(CMPoint &pt); //增加一个点
    void AddPointArray(CMPoint* lpPt, int numPts);

    vector<CMPoint> m_pts;
};

//多边形，从多段线继承
class CMPolyRegion : public CMPolyLine
{

};

//请根据以下调用代码，补充完善前面的类接口
void main()
{
    vector<CMShape*> shapesData;

    CMPoint pt1(1.0, 0, 0);
    CMPoint pt2(2.0, 0, 0);
    CMPoint pt3(2.0, 0, 0);

    CMPolyLine polyLine;
    polyLine.AddPoint(pt1);
    polyLine.AddPoint(pt2);
    polyLine.AddPoint(pt3);

    CMPolyLine polyLine2; //表示多段线在后面追加一个点
    polyLine2 = polyLine + CMPoint(5.0, 5.0);


    //"拷贝": 将多段线的数据拷贝给多边形对象 
    CMPolyRegion region;  
    region = polyLine;


    //将三个对象的指针加入数组中
    shapesData.push_back(&polyLine);
    shapesData.push_back(&polyLine2);
    shapesData.push_back(®ion);

    //输出数据
    for(int i=0; i<shapesData.size(); i++)
    {
        shapesData[i]->Output();
    }
}

///////////////////////////////////////////////////////////////////////

// 题目2
完成一个多计时器功能的类
功能：一个记时名称，起始时间，结束时间，
输出该记时
用例：
记录 "跑道1"， 开始，结束，输出时间, 按时分秒输出

并输出调用例子： 输出用cout 输出

CMyTimer
{
     ...
}

CMyTime time;

time.Start("跑道1");
time.End("跑道1") ；
time.Output("跑道1");

time_t t1 =clock();
time_t t2 =clock();
ti-t2

Answer 1

基于Monster 组和GPT的调写：
题目一：

#include <iostream>
#include <vector>

using namespace std;

class CMShape
{
public:
    CMShape() {}
    virtual ~CMShape() {}
    virtual void Output() {}
};

class CMPoint : public CMShape
{
public:
    CMPoint(double x = 0, double y = 0) : x(x), y(y) {}
    virtual ~CMPoint() {}
    virtual void Output() {
        std::cout << "点:" << "坐标:" << x << " " << y << endl;
    }
    double x, y;
};

//多段线
class CMPolyLine : public CMShape
{
public:
    CMPolyLine() {}
    virtual ~CMPolyLine() {}
    void AddPoint(CMPoint &pt) { m_pts.push_back(pt); } //增加一个点
    void AddPointArray(CMPoint* lpPt, int numPts) {}
    CMPolyLine operator+(CMPoint pt) {
        CMPolyLine newLine(*this);
        newLine.AddPoint(pt);
        return newLine;
    }
    virtual void Output() {
        std::cout << "多段线:" << endl;
        for (int i = 0; i < m_pts.size(); i++) {
            m_pts[i].Output();
        }
    }
    vector<CMPoint> m_pts;
};

//多边形，从多段线继承
class CMPolyRegion : public CMPolyLine
{
public:
    CMPolyRegion() {}
    virtual ~CMPolyRegion() {}
};

//主函数
int main()
{
    vector<CMShape*> shapesData;

    CMPoint pt1(1.0, 0.0);
    CMPoint pt2(2.0, 0.0);
    CMPoint pt3(2.0, 0.0);

    CMPolyLine polyLine;
    polyLine.AddPoint(pt1);
    polyLine.AddPoint(pt2);
    polyLine.AddPoint(pt3);

    CMPolyLine polyLine2; //表示多段线在后面追加一个点
    polyLine2 = polyLine + CMPoint(5.0, 5.0);

    //"拷贝": 将多段线的数据拷贝给多边形对象 
    CMPolyRegion region;
    region = polyLine;

    //将三个对象的指针加入数组中
    shapesData.push_back(&polyLine);
    shapesData.push_back(&polyLine2);
    shapesData.push_back(&region);

    //输出数据
    for (int i = 0; i < shapesData.size(); i++) {
        shapesData[i]->Output();
    }

    return 0;
}

题目二：

#include <iostream>
#include <map>
#include <chrono>
#include <iomanip>

class CMyTimer
{
public:
    void Start(const std::string& name)
    {
        m_startTimes[name] = std::chrono::high_resolution_clock::now();
    }

    void End(const std::string& name)
    {
        m_endTimes[name] = std::chrono::high_resolution_clock::now();
    }

    void Output(const std::string& name)
    {
        auto startTime = m_startTimes.find(name);
        auto endTime = m_endTimes.find(name);

        if (startTime == m_startTimes.end() || endTime == m_endTimes.end())
        {
            std::cout << "Error: Timer '" << name << "' not found." << std::endl;
            return;
        }

        auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(endTime->second - startTime->second);

        std::cout << "Timer '" << name << "' duration: ";
        std::cout << std::setw(2) << std::setfill('0') << (duration.count() / (60 * 60 * 1000)) << ":";
        std::cout << std::setw(2) << std::setfill('0') << ((duration.count() / (60 * 1000)) % 60) << ":";
        std::cout << std::setw(2) << std::setfill('0') << ((duration.count() / 1000) % 60) << ".";
        std::cout << std::setw(3) << std::setfill('0') << (duration.count() % 1000) << std::endl;
    }

private:
    std::map<std::string, std::chrono::high_resolution_clock::time_point> m_startTimes;
    std::map<std::string, std::chrono::high_resolution_clock::time_point> m_endTimes;
};

int main()
{
    CMyTimer timer;
    timer.Start("跑道1");
    // do something
    timer.End("跑道1");
    timer.Output("跑道1");

    return 0;
}