2015.5.13复数类的运算符重载（续）-优快云博客

本文介绍了一个使用C++实现的复数类，该类支持基本的数学运算，包括加法、减法、乘法和除法，并通过重载运算符来简化这些操作。此外，还实现了输入和输出复数的功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

#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);
    Complex operator-();
    friend ostream&operator<<(ostream&,Complex&c);
    friend istream&operator>>(istream&,Complex&c);
private:
    double real;
    double imag;
};
Complex Complex::operator+(const Complex &c2)
{
    Complex c3;
    c3.real=(*this).real+c2.real;
    c3.imag=(*this).imag+c2.imag;
    return c3;
}
Complex Complex::operator-(const Complex &c2)
{
    Complex c3;
    c3.real=(*this).real-c2.real;
    c3.imag=(*this).imag-c2.imag;
    return c3;
}
Complex Complex::operator*(const Complex &c2)
{
    Complex c3;
    c3.real=((*this).real*c2.real-(*this).imag*c2.imag);
    c3.imag=((*this).imag+c2.real+(*this).real*c2.imag);
    return c3;
}
Complex Complex::operator/(const Complex &c2)
{
    Complex c3;
    c3.real=((*this).real*c2.real+(*this).imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    c3.imag=((*this).imag*c2.real-(*this).real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    return c3;
}
Complex Complex::operator-()
{
    Complex c1;
    c1.real=-real;
    c1.imag=-imag;
    return c1;
}

ostream & operator<<(ostream &,Complex &c)
{
    if(c.imag>0)
    cout<<"("<<c.real<<"+"<<c.imag<<"i)"<<endl;
    else if(c.imag<0)
    cout<<"("<<c.real<<c.imag<<"i)"<<endl;
    else
        cout<<"("<<c.real<<")"<<endl;
    return cout;
}
istream & operator>>(istream &,Complex &c)
{
    cout<<"输入实部和虚部";
    cin>>c.real>>c.imag;
    return cin;
}
int main()
{
    Complex c1,c2,c3;
    cin>>c1;
    cin>>c2;
    cout<<"c1="<<c1;
    cout<<"c2="<<c2;
    c3=-c1;
    cout<<"-c1="<<c3;
    c3=c2+c1;
    cout<<"c1+c2="<<c3;
    c3=c1-c2;
    cout<<"c1-c2="<<c3;
    c3=c1*c2;
    cout<<"c1*c2="<<c3;
    c3=c1/c2;
    cout<<"c1/c2="<<c3;
    return 0;
}