学完C学C++（3）对象和类

#include 
#include 
#include
#include "study.h"


#ifdef DAY4
//例题6，移动坐标
#ifndef Hfile
//头文件部分
class Move
{
private:
	double x;
	double y;
public:
	Move(double a = 0, double b = 0);
	~Move();
	void showmove()const;
	Move Move_add(const Move& m)const;
	void reset(double a = 0, double b = 0);
};
#endif
Move::Move(double a , double b )
{
	this->x = a;
	this->y = b;
	std::cout <x << " " << this->y << std::endl;
}
//两坐标相加,返回一个对象
//这里我本来想改变this，不返回东西，结果书上后面加个const
//意思是让我不要改变两个对象，所以就这样设计
Move Move::Move_add(const Move& m)const
{
	Move add_m;
	add_m.x=this->x + m.x;
	add_m.y=this->y + m.y;
	return add_m;
}
//重置坐标
void Move::reset(double a, double b )
{
	this->x = a;
	this->y = b;
}
//测试
int main()
{
	std::cout << "creat m1,m2,m3n";
	Move m1(1.14,5.14);
	Move m2(3.14, 6.66);
	Move m3;
	std::cout << "m1:n";
	m1.showmove();
	m1.reset(5.14, 1.14);
	std::cout << "m2:n";
	m2.showmove();
	std::cout << "m3:n";
	m3 = m2.Move_add(m1);
	m3.showmove();
	return 0;
}

#endif`