C++习题 复数类--重载运算符+,-,*,/

定义一个复数类Complex，重载运算符“+”,“-”,“*”,“/”，使之能用于复数的加、减、乘、除。运算符重载函数作为Complex类的成员函数。编写程序，分别求两个复数之和、差、积和商。

两个复数

两个复数之和、差、积和商

3 4
5 -10

c1+c2=(8.00,-6.00i)
c1-c2=(-2.00,14.00i)
c1*c2=(55.00,-10.00i)
c1/c2=(-0.20,0.40i)
/* C++代码 */

#include <iostream>

#include <iomanip>

using namespace std;

class Complex

{

public:

    Complex();

    Complex(double r,double i);

    Complex operator+(Complex &c2);

    Complex operator-(Complex &c2);

    Complex operator*(Complex &c2);

    Complex operator/(Complex &c2);

    void display();

private:

    double real;

    double imag;

};

Complex ::Complex()
{return ;}
Complex::Complex(double r,double i)
{real=r;imag=i;}
Complex Complex:: operator+(Complex &c2)
{return Complex(real+c2.real,imag+c2.imag);}

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

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

    Complex Complex::operator/(Complex &c2)
	{double x;
	x=c2.imag*c2.imag+c2.real*c2.real;
	return Complex((real*c2.real+imag*c2.imag)/x,(-real*c2.imag+imag*c2.real)/x);}
	void	Complex::display()
	{cout<<‘(‘<<real<<‘,‘<<imag<<‘i‘<<‘)‘<<endl;}



int main()

{

    double real,imag;

    cin>>real>>imag;

    Complex c1(real,imag);

    cin>>real>>imag;

    Complex c2(real,imag);

    cout<<setiosflags(ios::fixed);

    cout<<setprecision(2);

    Complex c3=c1+c2;

    cout<<"c1+c2=";

    c3.display();

    c3=c1-c2;

    cout<<"c1-c2=";

    c3.display();

    c3=c1*c2;

    cout<<"c1*c2=";

    c3.display();

    c3=c1/c2;

    cout<<"c1/c2=";

    c3.display();

    return 0;

}