第九周任务1（Complex类中的<<和>>运算符的重载）

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最新推荐文章于 2022-03-18 21:56:17 发布

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文章标签：任务 c input system

本文链接：https://blog.youkuaiyun.com/YTDXWZK/article/details/7461874

本文介绍了一个名为Complex的类，该类实现了复数的基本算术运算符重载，包括加、减、乘、除，并进一步扩展了输入输出运算符（<< 和 >>）。通过这些重载，可以更直观地进行复数的数学操作。

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*作者：王智凯
*完成日期：2011年4月16号
*版本号：凯子

* 对任务及求解方法的描述部分
* 输入描术：

* 问题描述：在重载运算符+、-、*、/的基础上，增加重载运算符>> << ,实现输入和输出。
* 程序输出：

* 程序头部的注释结束
*/

#include <iostream>

#include <iomanip>

using namespace std;

class Complex
{
public:
	Complex(){real = 0; imag = 0;}
	Complex(double r){real = r;imag = 0;}//类型转换函数
	Complex(double r,double i){real = r; imag = i;}
	friend Complex operator+ (Complex c1,Complex c2);
	friend Complex operator- (Complex c1, Complex c2);
	friend Complex operator- (Complex &c);
	friend Complex operator* (Complex c1, Complex c2);
	friend Complex operator/ (Complex c1, Complex c2);
	friend ostream& operator << (ostream &,Complex &);
	friend istream& operator >> (istream &,Complex &);
private:
	double real;
	double imag;
};

Complex operator+ (Complex c1, Complex c2)
{
	return Complex(c1.real + c2.real, c1.imag + c2.imag);
}

Complex operator- (Complex c1, Complex c2)
{
	return Complex(c1.real - c2.real, c1.imag - c2.imag);
}

Complex operator - (Complex &c)
{ 
	return Complex(-c.real, -c.imag);
}

Complex operator* (Complex c1, Complex c2)
{
	return Complex(c1.real * c2.real - c1.imag * c2.imag, c1.imag * c2.real + c1.real * c2.imag);
}

Complex operator/ (Complex c1, Complex c2)
{
	return Complex((c1.real * c2.real + c1.imag * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag), (c1.imag * c2.real - c1.real * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag));
}
ostream& operator << (ostream &ouput,Complex &c)
{
	ouput << "(" << setprecision(3) << c.real;
	if(c.imag >= 0)
		ouput << "+";
	ouput << setprecision(3) << c.imag << "i)" << endl;
	return ouput;
}

istream& operator >> (istream &input, Complex &c)
{
	char c1;
	cout << "input real part and imaginary part of complex number:";
	input >> c.real >> c.imag;
	return input;
}

int main()
{
	double d = 3;
	Complex c1, c2, c3;
	cin >> c1;
	cout << "c1 = " << c1;

	cin >> c2;
	cout << "c2 = " << c2;

	c3 = c1 + c2;
	cout << "c1 + c2 = " << c3;

	c3 = c1 + d;
	cout << "c1 + " << d << "= " << c3;

	c3 = d + c1;
	cout << d << " + c1" << "= " << c3;

	c3 = c1 - c2;
	cout << "c1 - c2 = " << c3;

	c3 = c1 - d;
	cout << "c1 - " << d << "= " << c3;

	c3 = d - c1;
	cout << d << " - c1" << "= " << c3;

	c3 = - c1;
	cout << " -c1= " << c3;


	c3 = c1 * c2;
	cout << "c1 * c2 = " << c3;

	c3 = c1 * d;
	cout << "c1 * " << d << "= " << c3;

    c3 = d * c1;
	cout << d << " * c1" << "= " << c3;

	c3 = c1 / c2;
	cout << "c1 / c2 = " << c3;

	c3 = c1 / d;
	cout << "c1 / " << d << "= " << c3;

	c3 = d / c1;
	cout << d << " / c1" << "= " << c3;

	system("pause");
	return 0;
}