第十周项目：复数类中的运算符重载（续）（2）-优快云博客

本文介绍了一个使用C++实现的复数类，该类支持加、减、乘、除等基本运算，并提供了输入输出操作符以方便进行数据交互。通过具体示例展示了如何创建复数对象并执行各种算术操作。

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代码：

#include <iostream>

using namespace std;

class Complex
{
public:
    Complex(){real=0;imag=0;}
    Complex(double r,double i){real=r; imag=i;}
    Complex operator+(const Complex &c2);
    Complex operator-(const Complex &c2);
    Complex operator*(const Complex &c2);
    Complex operator/(const Complex &c2);
    friend ostream& operator<<(ostream&,Complex&);
    friend istream& operator>>(istream&,Complex&);
private:
    double real;
    double imag;
};

Complex Complex::operator+(const Complex &c2)
{
    Complex c;
    c.real=real+c2.real;
    c.imag=imag+c2.imag;
    return c;
}

Complex Complex::operator-(const Complex &c2)
{
    Complex c;
    c.real=real-c2.real;
    c.imag=imag-c2.imag;
    return c;
}

Complex Complex::operator*(const Complex &c2)
{
    Complex c;
    c.real=real*c2.real-imag*c2.imag;
    c.imag=imag*c2.real+real*c2.imag;
    return c;
}

Complex Complex::operator/(const Complex &c2)
{
    Complex c;
    c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    return c;
}

ostream& operator<<(ostream&output,Complex&c)
{
    output<<"("<<c.real<<","<<c.imag<<"i"<<")";
    return output;
}

istream& operator>>(istream&input,Complex&c)
{
    input>>c.real>>c.imag;
    return input;
}

int main()
{
    Complex c1(3,4),c2(5,-10),c3,c4;
    cout<<"c1="<<c1<<endl;
    cout<<"c2="<<c2<<endl;
    c3=c1+c2;
    cout<<"c1+c2="<<c3<<endl;
    c3=c1-c2;
    cout<<"c1-c2="<<c3<<endl;
    c3=c1*c2;
    cout<<"c1*c2="<<c3<<endl;
    c3=c1/c2;
    cout<<"c1/c2="<<c3<<endl;
    cout<<"c4:";
    cin>>c4;
    cout<<"c4="<<c4<<endl;
    return 0;
}

运行结果：