C++：一目运算符重载，++前置与++后置

在C++的海洋里挣扎

于 2019-02-28 19:44:25 发布

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本文链接：https://blog.youkuaiyun.com/feissss/article/details/88043154

本文详细介绍了在C++中如何为一个自定义的坐标类重载一元运算符和增量运算符。通过具体的代码示例，展示了如何实现坐标值的取反和增量操作，加深了对C++运算符重载特性的理解。

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#include <iostream>
using namespace std;
class Coordinate
{

public:
	Coordinate(int x, int y)
	{
		// 设置X,Y的坐标
		m_iX = x;
		m_iY = y;
	}
	Coordinate &operator-()   //一目运算符重载
	{
		m_iX = -m_iX;
		m_iY = -m_iY;
		return *this;
	}
	Coordinate &operator++()	//前置++重载
	{
		m_iX++;
		m_iY++;
		return *this;
	}
	Coordinate operator++(int)  // 后置++重载
	{
		Coordinate co(*this);
		this->m_iX++;
		this->m_iY++;
		return co;
	}
	int getX() 
	{
		return m_iX;
	}
	int getY()
	{
		return m_iY;
	}
public:
	int m_iX;
	int m_iY;
};

int main(void)
{
	
	Coordinate coor(3, 5);
	// 打印坐标
	cout << "(" << coor.getX() << "," << coor.getY() << ")" << endl;
	cout << (coor++).getX() << ",";
	cout << (coor++).getY() << endl;
	system("pause");
	return 0;
}