#include<iostream>
#include<Cmath>
using namespace std;
enum SymmetricStyle {axisx,axisy,point};//分别表示按x轴, y轴, 原点对称
struct Point{
double x; // 横坐标
double y; // 纵坐标
};
double distance(Point p1, Point p2); // 两点之间的距离
double distance0(Point p1);
Point symmetricAxis(Point p,SymmetricStyle style); //返回对称点
int main( ){
Point p1={1,5},p2={4,1},p;
cout<<"两点的距离为:"<<distance(p1,p2)<<endl;
cout<<"p1到原点的距离为:"<<distance0(p1)<<endl;
p=symmetricAxis(p1,axisx);
cout<<"p1关于x轴的对称点为:"<<"("<<p.x<<", "<<p.y<<")"<<endl;
p=symmetricAxis(p1,axisy);
cout<<"p1关于y轴的对称点为:"<<"("<<p.x<<", "<<p.y<<")"<<endl;
p=symmetricAxis(p1,point);
cout<<"p1关于原点的对称点为:"<<"("<<p.x<<", "<<p.y<<")"<<endl;
return 0;
}
double distance(Point p1, Point p2){
double c;
c=pow((p1.x-p2.x),2)+pow((p1.y-p2.y),2);
return sqrt(c);
} // 两点之间的距离
double distance0(Point p1){
double c;
c=pow((p1.x-0),2)+pow((p1.y-0),2);
return sqrt(c);
}
Point symmetricAxis(Point p,SymmetricStyle style){
switch(style){
case 0:
{
p.y=-p.y;
return p;
break;
}
case 1:
{
p.x=-p.x;
return p;
break;
}
case 2:{
p.y=-p.y;
p.x=-p.x;
return p;
break;
}
}
} //返回对称点
运行结果: