第八周任务

#include<iosteam>
using namespeace std;
class Complex
{public:
	Complex(){real=0;imag=0;}
	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 &c1,Complex &c2);
	friend Complex operator/(Complex &c1,Complex &c2);
	void display();
 private:
	double real;
	double imag;
};

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

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

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

void Complex::display();
{
  cout<<"("<<real<<","<<iamg<<"i)";

}

//下面是测试函数
int main()
{
	Complex c1(3,4),c2(5,-10),c3;
	cout<<"c1=";
	c1.display();
	cout<<"c2=";
	c2.display();
	c3=c1+c2;
	operator+(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;
}