#include<iostream>
#include<cmath>
#define PI 3.1415
using namespace std;
class Point
{
int x,y;
public:
Point(){}
Point(int xx,int yy)
{
x=xx;y=yy;
}
Point(Point &r)
{
x=r.x;
y=r.y;
}
int GetX(){return x;}
int GetY(){return y;}
~Point()
{
cout<<"Point xigou "<<x<<" "<<y<<endl;;
}
};
class Ellipse
{
Point a,b;
double area;
public:
void Area()//计算面积值
{
double m,n;
int x1,y1,x2,y2;
x1=a.GetX(),y1=a.GetY(),x2=b.GetX(),y2=b.GetY();
m=double(fabs(x1-x2)/2);
n=double(fabs(y1-y2)/2);
//cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
area=PI*m*n;
//cout<<r<<endl;
//cout<<area;
Ellipse::Showarea();
}
Ellipse(){}
Ellipse(int X1,int Y1,int X2,int Y2)
{
a(X1,Y1),b(X2,Y2);
cout<<"gouzao 1 "<<X1<<" "<<Y1<<" "<<X2<<" "<<Y2<<endl;;
}
Ellipse(Point &p1,Point &p2)
{
a=p1,b=p2;
cout<<"gouzao 2 "<<a.GetX()<<" "<<a.GetY()<<" "<<b.GetX()<<" "<<b.GetY()<<endl;
}
void Show()//输出坐标
{
cout<<a.GetX()<<" "<<a.GetY()<<" "<<b.GetX()<<" "<<b.GetY()<<" "<<endl;
}
void Showarea()//输出面积值
{
cout<<area<<endl;;
}
~Ellipse()
{
cout<<"Ellipse xigou "<<b.GetX()<<" "<<b.GetY()<<endl;
}

};

int main()
{
int X1,X2,Y1,Y2;
cin>>X1>>Y1>>X2>>Y2;
//cout<<X1<<" "<<Y1<<" "<<X2<<" "<<Y2<<endl;
Ellipse e1(X1,Y1,X2,Y2);
int X3,Y3,X4,Y4;
cin>>X3>>Y3>>X4>>Y4;
Point p1(X3,Y3),p2(X4,Y4);//构建对象1
Ellipse e2(p1,p2);
e1.Show();
e2.Show();
e1.Area();
e2.Area();
return 0;
}

JSON转换到objectiveC的转化器

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