用枚举表示对称方式

#include<iostream>
using namespace std;
enum SymmetricStyle {axisx, axisy, point};//分别表示按x轴, y轴, 原点对称三种方式
void output(double,double,SymmetricStyle);
int main()
{
    int x,y;
    cout<<"输入点的坐标：";
    cin>>x>>y;
    cout<<"关于x轴的对称点是：";
    output(x,y,axisx);
    cout<<"关于y轴的对称点是：";
    output(x,y,axisy);
    cout<<"关于坐标原点的对称点是：";
    output(x,y,point);
    return 0;
}
void output(double x,double y,SymmetricStyle s)
{
    switch(s)
    {
    case axisx:
        cout<<"("<<x<<","<<-y<<")"<<endl;
        break;
    case axisy:
        cout<<"("<<-x<<","<<y<<")"<<endl;
        break;
    case point:
        cout<<"("<<-x<<","<<-y<<")"<<endl;
        break;
    }
    cout<<endl;
    return;
}