第八周任务一

#include <iostream>

using namespace std;
class Complex
{
public:
Complex(){real=0;imag=0;}
Complex(double r,double i){real=r;imag=i;}
Complex operator+(Complex &c2);
Complex operator-(Complex &c2);
Complex operator*(Complex &c2);
Complex operator/(Complex &c2);
void display();
private:
double real;
double imag;
};
//下面定义成员函数
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)
{
Complex c;

c.real = real * c2.real - imag * c2.imag;
c.imag = real * c2.imag + imag * c2.real;

return c;
}
Complex Complex::operator/(Complex &c2)
{
Complex c;

c.real = (real * c2.real + imag * c2.imag)/(c2.imag * c2.imag + c2.real * c2.real);
c.imag = (imag * c2.real - real * c2.imag)/(c2.imag * c2.imag + c2.real * c2.real);

return c;
}

void Complex::display()
{
cout << "(" << real << "," << imag << "i)" << endl;
}
int main()
{
Complex c1(3,4),c2(5,-10),c3;
cout<<"c1 = ";
c1.display();
cout<<"c2 = ";
c2.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();
c3=c1/c2;
cout<<"c1/c2 = ";
c3.display();
system("pause");
return 0;
}