C++程序设计实验报告6-3

/** 程序的版权和版本声明部分

* Copyright (c) 2011, 烟台大学计算机学院学生

* All rights reserved.

* 文件名称：设计平面坐标点类                          

* 作   者：  计114-3    杨坛坛                     

* 完成日期：     2012     年  3    月 28  日

* 版本号：   VC 2008     

 

* 对任务及求解方法的描述部分

* 输入描述：

* 问题描述：计算两点之间的距离，到原点的距离，关于坐标轴和原点的对称点等

* 程序输出：

* 问题分析：

* 算法设计：

*/

 

#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，另一点是参数P）double Distance0() const;//到原点的距离Cpoint SymmetricAxis(SymmetricStyle style) const;//返回对称点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 c1, c2;cout << "请输入c1的坐标：";    c1.input();cout << "请输入c2的坐标：";c2.input();cout << "两点之间的距离为："<< c2.Distance(c1) << endl;cout << "到原点的距离为：" << c2.Distance0() << endl;c2 = c2.SymmetricAxis(axisx);cout << "c2关于x轴的对称点为：";c2.output();    c2 = c2.SymmetricAxis(axisy);cout << "c2关于y轴的对称点为：";    c2.output();c2 = c2.SymmetricAxis(point);cout << "c2关于原点的对称点为：";c2.output();return 0;}Cpoint::Cpoint(double xx , double yy ){x = xx;y = yy;}void Cpoint::input(){char ch;while (1){cin >> x >> ch >> y;if(ch == ','){break;}else{cout << "格式不正确，请重新输入" << endl;}}}void  Cpoint::output(){cout << "(" << x << "," << y << ")" <<endl;}double Cpoint::Distance(Cpoint p) const{double d;d = sqrt ((p.x - x) * (p.x - x) + (p.y - y) * (p.y - y));return d;}double Cpoint::Distance0() const{double d;d = sqrt (x * x + y * y);return d;}Cpoint Cpoint::SymmetricAxis(SymmetricStyle style) const{Cpoint p(x,y);switch(style){case axisx:p.y = -y; break;      case axisy:          p.x = -x; break;      case point:          p.x = -x;p.y = -y;break;}return p;}