网易云课堂_C++程序设计入门(下)_第8单元：年年岁岁花相似– 运算符重载_第8单元

第8单元 - 作业1：OJ编程 - 重载关系运算符

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1.本次作业属于Online Judge题目，提交后由系统即时判分。

2.学生可以在作业截止时间之前不限次数提交答案，系统将取其中的最高分作为最终成绩。

练习关系运算符重载

依照学术诚信条款，我保证此作业是本人独立完成的。

1

练习关系运算符重载（5分）

题目内容：

参见本节课件【第8单元 - 单元作业1说明】

输入格式:

输出格式：

输入样例：

输出样例：

时间限制：500ms内存限制：32000kb

#include <iostream>
#include <string>
#include <sstream>
using namespace std;

class MyShape {
protected:
	int R_, G_, B_;

	string colorToString() {
		stringstream ss;
		ss << R_ << " " << G_ << " " << B_;
		return ss.str();
	}
public:
	void setColor(int R, int G, int B) {
		R_ = R; G_ = G, B_ = B;
	}
	int getR() {
		return R_;
	}
	int getG() {
		return G_;
	}
	int getB() {
		return B_;
	}
	virtual void Draw() = 0;
	MyShape() {
		R_ = 255; G_ = 255, B_ = 255;
	}
};

class MyCircle : public MyShape {
private:
	int x_, y_, radius_;

public:
	MyCircle(int x, int y, int radius) {
		x_ = x;
		y_ = y;
		radius_ = radius;
	}

	MyCircle() {
		x_ = y_ = 200;
		radius_ = 100;
	}

	MyCircle(MyCircle& aCircle) {
		x_ = aCircle.x_;
		y_ = aCircle.y_;
		radius_ = aCircle.radius_;
		R_ = aCircle.getR();
		G_ = aCircle.getG();
		B_ = aCircle.getB();
	}
	void setCenter(int x, int y) {
		x_ = x;
		y_ = y;
	}

	void setRadius(int radius) {
		radius_ = radius;
	}

	void Draw() {
	}

	int getRadius();

	//----在此处添加关系运算符  >、<、>=、<=、==、!=  的重载原型声明
	bool operator>(MyCircle &secondMyCircle);
	bool operator<(MyCircle &secondMyCircle);
	bool operator>=(MyCircle &secondMyCircle);
	bool operator<=(MyCircle &secondMyCircle);
	bool operator==(MyCircle &secondMyCircle);
	bool operator!=(MyCircle &secondMyCircle);
};

int MyCircle::getRadius()
{
	return radius_;
}

//----在此处添加关系运算符的重载定义
bool MyCircle::operator>(MyCircle & secondMyCircle)
{
	return (this->getRadius()) > (secondMyCircle.getRadius());
}

bool MyCircle::operator<(MyCircle & secondMyCircle)
{
	return (this->getRadius()) < (secondMyCircle.getRadius());
}

bool MyCircle::operator>=(MyCircle & secondMyCircle)
{
	return (this->getRadius()) >= (secondMyCircle.getRadius());
}

bool MyCircle::operator<=(MyCircle & secondMyCircle)
{
	return (this->getRadius()) <= (secondMyCircle.getRadius());
}

bool MyCircle::operator==(MyCircle & secondMyCircle)
{
	return (this->getRadius()) == (secondMyCircle.getRadius());
}

bool MyCircle::operator!=(MyCircle & secondMyCircle)
{
	return (this->getRadius()) != (secondMyCircle.getRadius());
}

int main() {
	int r1, r2, r3 = 0;
	cin >> r1 >> r2 >> r3;
	MyCircle c1, c2, c3;
	c1.setRadius(r1);
	c2.setRadius(r2);
	c3.setRadius(r3);

	cout << (c1 > c2) << endl;
	cout << (c1 < c2) << endl;
	cout << (c2 >= c3) << endl;
	cout << (c2 <= c3) << endl;
	cout << (c1 == c3) << endl;
	cout << (c1 != c3) << endl;
	return 0;
}