第九周C++实验报告（一）

[cpp] view
plaincopy

#include<iostream.h>      

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);      

    friend ostream& operator << (ostream&,Complex&);    

    friend istream& operator >> (istream&,Complex&);    

private:      

    double real;      

    double imag;      

};      

//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;    

}    

//复数相加： (a+bi)+(c+di)=(a+c)+(b+d)i.      

Complex Complex::operator+(Complex &c2)          

{        

    Complex c;         

    c.real=real+c2.real;        

    c.imag=imag+c2.imag;        

    return c;        

}        

//复数相减：(a+bi)-(c+di)=(a-c)+(b-d)i.            

Complex Complex::operator-(Complex &c2)            

{            

    Complex c;            

    c.real=real-c2.real;            

    c.imag=imag-c2.imag;            

    return c;            

}            

//复数相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.        

Complex Complex::operator*(Complex &c2)       

{            

    Complex  c;            

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

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

    return c;            

}            

//复数相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i        

Complex Complex::operator/(Complex &c2)       

{            

    Complex  c;            

    double d=c2.real*c2.real+c2.imag*c2.imag;        

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

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

    return c;            

}         

    

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=";      

    cout<<c1;      

    cout<<"c2=";      

    cout<<c2;      

    c3=c1+c2;      

    cout<<"c1+c2=";      

    cout<<c3;      

    c3=c1-c2;      

    cout<<"c1-c2=";      

    cout<<c3;      

    c3=c1*c2;      

    cout<<"c1*c2=";      

    cout<<c3;      

    c3=c1/c2;      

    cout<<"c1/c2=";      

    cout<<c3;       

    return 0;      

}