第八周项目-1.2

#include<iostream>
using namespace std;
class Complex
{
public:
Complex(){ real = 0; imag = 0; }
Complex(double r,double i){ real = r; imag = i; }
friend Complex operator + (const Complex &c1,const Complex &c2);
friend Complex operator - (const Complex &c1,const Complex &c2);
friend Complex operator*(const Complex &c1,const Complex &c2);
friend Complex operator/(const Complex &c1,const Complex &c2);
void display();
private:
double real;
double imag;
};
//下面定义成员函数
Complex operator+(const Complex &c1,const Complex &c2)
{
return Complex(c1.real + c2.real,c1.imag + c2.imag);
}
Complex operator-(const Complex &c1,const Complex &c2)
{
return Complex(c1.real - c2.real,c1.imag - c2.imag);
}
Complex operator*(const Complex &c1,const Complex &c2)
{
return Complex(c1.real*c2.real - c1.imag*c2.imag,c1.real*c2.imag + c1.imag*c2.real);
}
Complex operator/(const Complex &c1,const Complex &c2)//(ac+bd)/(c^2+d^2)+〔(bc-ad)/(c^2+d^2)〕i
{
return Complex((c1.real*c2.real + c1.imag*c2.imag) / (c2.real*c2.real + c2.imag*c2.imag),(c1.imag*c2.real - c1.real*c2.imag) / (c2.real*c2.real + c2.imag*c2.imag));
}
void Complex::display()
{
if (imag == 0)
cout << real << endl;
else if (imag < 0)
cout << real << - << -imag << i << endl;
else
cout << real << + << imag << i << endl;
}
//下面定义用于测试的main()函数
int main()
{
Complex c1(3,4),c2(5,⑴0),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();
while (1){}
return 0;
}