第五周项目体验常成员函数

最新推荐文章于 2015-04-26 18:10:10 发布

a6177738

最新推荐文章于 2015-04-26 18:10:10 发布

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本文链接：https://blog.youkuaiyun.com/a6177738/article/details/45008343

#include <iostream>
#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):x(xx),y(yy){};
    double Distance1(CPoint p) const;//两点之间的距离
    double Distance0() const;//到原点(0,0)的距离
    CPoint SymmetricAxis(char style) const;//style 取'x','y'和'o'分别表示按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
};
void CPoint::input()
{
    cout<<"请输入坐标"<<endl;
    cin>>x>>y;
}
double CPoint::Distance1(CPoint p) const
{
    p.input();
    cout<<"两点之间的距离为: "<<sqrt((this->x-p.x)*(this->x-p.x)+(this->y-p.y)*(this->y-p.y))<<endl;
}
double CPoint::Distance0() const
{
    cout<<"点到原点的距离是"<<x*x+y*y<<endl;
}
void CPoint::output()
{
    cout<<"此点坐标"<<endl;
    cout<<"("<<x<<","<<y<<")"<<endl;
}
CPoint::SymmetricAxis(char style) const
{
    if(style=='x')
        this->y=-this->y;
    else if(style=='y')
        SymmetricAxis(char style).x=-this->x;
    }
}
int main()
{
    CPoint c;
    CPoint p;
    c.input();
    c.Distance1(p);
    c.Distance0();
    c.output();
    return 0;
}