一道C++语言的题目第一道：为了使下面的程序运行,请完成相关的类. #include"point.h" int main(){ Point p1,p2(3,3),p3(8,8),p4,p5,p6; cout << "p1:" <<p1 << endl; cout

一道C++语言的题目第一道：为了使下面的程序运行,请完成相关的类. #include"point.h" int main(){ Point p1,p2(3,3),p3(8,8),p4,p5,p6; cout << "p1:" <<p1 << endl; cout
一道C++语言的题目
第一道：
为了使下面的程序运行,请完成相关的类.
 
#include"point.h"
 
int main()
{
         Point p1,p2(3,3),p3(8,8),p4,p5,p6;
 
         cout << "p1:" <<p1 << endl;
         cout << "p2:" <<p2 << endl;
         cout << "p3:" <<p3 << endl << endl;
 
         p1.setX(10);
         cout << "change p1:"<< p1 << endl << endl;
 
    cout<< "Input x and y :";
         cin >> p4;
         cout << "p4:" <<p4 << endl << endl;
 
         p5 = 5 + p2;
         cout << "p5 = 5 + p2"<< endl;
         cout << "p5:" <<p5 << endl ;
         cout << "p2:" <<p2 << endl << endl;
 
         if(p5 == p3)
                   cout <<"p5==p3" << endl << endl;
         else
                   cout <<"p5!=p3" << endl << endl;
 
 
         p6 = p3++;
         cout << "p6 = p3++"<< endl;
         cout << "p3:" <<p3 << endl ;
         cout << "p6:" <<p6 << endl << endl;
 
         p6 = ++p3;
         cout << "p6 = ++p3"<< endl;
         cout << "p3:" <<p3 << endl ;
         cout << "p6:" <<p6 << endl << endl;
 
         cout << endl;
 
 
         system("pause");
 
         return 0;
}

一道C++语言的题目第一道：为了使下面的程序运行,请完成相关的类. #include"point.h" int main(){ Point p1,p2(3,3),p3(8,8),p4,p5,p6; cout << "p1:" <<p1 << endl; cout
#include <iostream>
#include <cstdlib>
using namespace std;

class Point{
    public:
    explicit Point(int x = 0) : m_x(x), m_y(x) {}
    Point(int x , int y) : m_x(x),m_y(y) {}
    Point( const Point& rhs) : m_x(rhs.m_x),m_y(rhs.m_y) {}
    ~Point() {}
    
    friend std::ostream& operator<<( std::ostream& ost, const Point& rhs)
    {
        ost << "( " << rhs.m_x << " , " << rhs.m_y << " )";
        return ost;
    }
    friend std::istream& operator>>( std::istream& ist, Point& rhs)
    {
        ist >> rhs.m_x;
        ist >> rhs.m_y;
        return ist;
    }
    Point& operator++()
    {
        ++m_x;
        ++m_y;
        return *this;
    }
    // for point++
    const Point operator++(int)
    {
        Point tmp(m_x,m_y);
        ++m_x;
        ++m_y;
        return tmp; 
    }
    bool operator==(const Point& rhs)
    {
        return rhs.m_x == m_x && rhs.m_y == m_y;
    }
    Point& operator=( const Point& rhs )
    {
        m_x = rhs.m_x;
        m_y = rhs.m_y;
        return *this;
    }
    const Point& operator+(const Point& rhs)
    {
        Point tmp;
        tmp.m_x = m_x + rhs.m_x;
        tmp.m_y = m_y + rhs.m_y;
        return tmp;
    }
   friend Point& operator+(int lhs, const Point& rhs)
   {
       Point tmp;
       tmp.m_x = lhs + rhs.m_x;
       tmp.m_y = lhs + rhs.m_y;
       return tmp;
   }
    Point& operator+=(const Point& rhs)
    {
        m_x += rhs.m_x;
        m_y += rhs.m_y;
        return *this;
    }

    void setX(int x)
    {
        m_x = x;
    }
    void setY(int y)
    {
        m_y = y;
    }
    void set(int x, int y)
    {
        m_x = x;
        m_y = y;
    }
    private:
    int m_x;
    int m_y;
};