#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);
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
};
int main(){
CPoint num,num1,num2;
cout<<"第一个点的";
num.input();
cout<<"第二个点的";
num1.input();
cout<<"两点之间的距离"<<num.Distance(num1)<<endl;
cout<<"距原点的距离"<<num.Distance0()<<endl;
cout<<"第一个点的x,y,z轴的对称点"<<endl;
num2=num.SymmetricAxis('x');
num2.output();
num2=num.SymmetricAxis('y');
num2.output();
num2=num.SymmetricAxis('o');
num2.output();
return 0;
}
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));
}
void CPoint::output()
{
cout<<"("<<x<<", "<<y<<")"<<endl;
}
void CPoint::input()
{
char ch;
cout<<"请输入坐标点 格式(x,y ):";
while(1)
{
cin>>x>>ch>>y;
if (ch==',') break;
cout<<"输入的数据格式不符合规范,请重新输入\n";
}
}
CPoint CPoint::SymmetricAxis(char style) const
{
CPoint p(this->x,this->y);//用复制构造函数时,写作p(*this)
switch(style)
{
case 'x':
p.y=-y;
break;
case 'y':
p.x=-x;
break;
case 'o':
p.x=-x;
p.y=-y;
break;
}
return p;
}
运行结果: