⽤c++设计⼀个Point类，表⽰⼆维坐标系中的任意⼀点，然后在此基础上设计⼀
个矩形Rec。。。
Rectangle类使⽤Point类的两个坐标点作为矩形的对⾓坐标，并可以输出矩形4个顶点的坐标值和矩形⾯积。
#include<iostream>
#include<cmath>
using namespace std;
class Point;
class Rectangle
{
private:
double x1, y1, x2, y2, s;
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public:
Rectangle();
void peak1(Point&);
void peak2(Point&);
void area();
};
抽象画廊
class Point
{
private:
double x1, y1;
public:
Point();
Point(double m_x1,double m_y1):x1(m_x1),y1(m_y1){}
friend void Rectangle::peak1(Point&);
friend void Rectangle::peak2(Point&);
};
Point::Point()
{
x1 = y1 =0;
}
Rectangle::Rectangle()
{
s = x1 = x2 = y1 = y2 =0;
五险一金包括}
void Rectangle::peak1(Point& t1)炎热
{
x1 = t1.x1;
y1 = t1.y1;
}
void Rectangle::peak2(Point& t2)
{
x2 = t2.x1;
y2 = t2.y1;
cout <<"该矩形的四个顶点坐标是："<< endl;
cout <<"("<< x1 <<","<< y1 <<")";
cout <<"、 ("<< x2 <<","<< y2 <<")";
丰都cout <<"、 ("<< x1 <<","<< y2 <<")";
cout <<"、 ("<< x2 <<","<< y1 <<")"<< endl;
}
void Rectangle::area()
{
s =fabs(x2 - x1)*fabs(y2 - y1);
孩子脾气暴躁怎么办cout <<"矩形⾯积是："<< s << endl;
好词好句读后感}
void main()
{
double x1, y1, x2, y2;
cout <<"请输⼊两个坐标：";
cout <<"请输⼊两个坐标："; cin >> x1 >> y1 >> x2 >> y2; Point a(x1, y1);
Point b(x2, y2);
Rectangle c;
c.peak1(a);
毕业生推荐表模板c.peak2(b);
c.area();
}
