第九周实验报告一

#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();
//重载流插入运算符“<<”
friend ostream& operator << (ostream&,Complex&);
//重载流提取运算符“>>”
friend istream& operator >> (istream&,Complex&);
private:
double real;
double imag;
};
//用成员函数定义加减乘除
Complex Complex::operator+(Complex &c2)//下面定义成员函数
{
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.real*c2.real+c2.imag*c2.imag);
c.imag = (-real*c2.imag + imag*c2.real)/(c2.real*c2.real+c2.imag*c2.imag);
return c;
}

void Complex::display()
{
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
//下面定义成员函数
istream& operator >> (istream& input,Complex& c)
{
input>>c.real>>c.imag;
return input;
}
ostream& operator << (ostream& output,Complex& c)
{
output<<"("<<c.real<<" "<<c.imag<<"i)"<<endl;
return output;
}
int main()
{
Complex c1,c2,c3;
cout<<"请输入复数c1的值：（以a b的形式输入）";
cin>>c1;
cout<<"请输入复数c2的值：（以a b的形式输入）";
cin>>c2;
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;
}