第六周上机项目四

#include<iostream>#include<stdlib.h>
#include<Cmath>
using namespace std;
class CPoint
{
private:double x;//横坐标double y;//纵坐标
public:CPoint(double xx=0,double yy=0);double Distance(CPoint p) const;//两点之间的距离（一点是当前点，另一点为参数p）double Distance0() const;//到原点的距离CPoint SymmetricAxis(char style) const;//style取‘x’，‘y’和‘o’分别按x轴，y轴，原点对称void input();//以x，y形式输入坐标点void output();//以（x，y）形式输出坐标点};
CPoint::CPoint(double xx,double yy)
{x=xx;y=yy;}
double CPoint::Distance(CPoint p) const
{return sqrt((p.x-x)*(p.x-x)*(p.y-y)*(p.y-y));
}
double CPoint::Distance0() const
{return sqrt(x*x+y*y);
}
CPoint CPoint::SymmetricAxis(char style) const
{double cx=x,cy=y;switch(style){case'x':cx=-x;break;case'y':cy=-y;break;case'o':cx=-x;cy=-y;break;}CPoint cp(cx,cy);return cp;
}
void CPoint::input()
{char a;cout<<"请输入点的坐标（如x，y的形式）：";cin>>x>>a>>y;if(a!=','){cout<<"您输入的格式有误！"<<endl;input();}
}
void CPoint::output()
{cout<<"("<<x<<","<<y<<")";
}
int main()
{CPoint C;C.input();CPoint cp1(1.0,1.0),cp2(1.0,0.0);C.output();cout<<"到";cp1.output();cout<<"的距离为："<<C.Distance(cp1)<<endl;C.output();cout<<"到";cp2.output();cout<<"的距离为："<<C.Distance(cp2)<<endl;C.output();cout<<"到原点的距离为："<<C.Distance0()<<endl;C.output();cout << "关于x轴的对称点为：";  C.SymmetricAxis('x').output();  cout << endl;  C.output();
cout<< "关于y轴的对称点为：";  C.SymmetricAxis('y').output();  cout << endl;  C.output();  cout << "关于原点的对称点为：";  C.SymmetricAxis('o').output();  return 0;  
}