YTU 2441: C++习题 复数类--重载运算符2+

时间:2022-05-24 00:48:17

2441: C++习题 复数类--重载运算符2+

时间限制: 1 Sec  内存限制: 128 MB

提交: 847  解决: 618

题目描述

定义一个复数类Complex,重载运算符“+”,使之能用于复数的加法运算。参加运算的两个运算量可以都是类对象,也可以其中有一个是整数,顺序任意。例如,c1+c2,i+c1,c1+i均合法(设i为整数,c1,c2为复数)。编写程序,分别求两个复数之和、整数和复数之和。

输入

两个复数 

一个复数和一个整数 

一个整数和一个复数

输出

两个复数之和、复数和整数之和,整数和复数之和。

样例输入

3 4 5 -10
3 4 5
5 3 4

样例输出

c1+c2=(8.00,-6.00i)
c1+i=(8.00,4.00i)
i+c1=(8.00,4.00i)

提示

前置代码及类型定义已给定如下,提交时不需要包含,会自动添加到程序前部







/* C++代码 */



#include <iostream>



#include <iomanip>



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+(int &i);



    friend Complex operator+(int&,Complex &);



    void display();



private:



    double real;



    double imag;



};











主函数已给定如下,提交时不需要包含,会自动添加到程序尾部







/* C++代码 */







int main()



{



    double real,imag;



    cin>>real>>imag;



    Complex c1(real,imag);



    cin>>real>>imag;



    Complex c2(real,imag);



    cout<<setiosflags(ios::fixed);



    cout<<setprecision(2);



    Complex c3=c1+c2;



    cout<<"c1+c2=";



    c3.display();



    int i;



    cin>>real>>imag;



    cin>>i;



    c3=Complex(real,imag)+i;



    cout<<"c1+i=";



    c3.display();



    cin>>i;



    cin>>real>>imag;



    c1=Complex(real,imag);



    c3=i+c1;



    cout<<"i+c1=";



    c3.display();



    return 0;



}

迷失在幽谷中的鸟儿,独自飞翔在这偌大的天地间,却不知自己该飞往何方……

#include <iostream>
#include <iomanip>
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+(int &i);
friend Complex operator+(int&,Complex &);
void display();
private:
double real;
double imag;
};
Complex Complex:: operator +(Complex &c2)
{
Complex c;
c.real=real+c2.real;
c.imag=imag+c2.imag;
return c;
}
Complex Complex:: operator +(int &i)
{
Complex c;
c.real=real+i;
c.imag=imag;
return c; }
Complex operator + (int &i,Complex &c2)
{
Complex c;
c.real=i+c2.real;
c.imag=c2.imag;
return c;
}
void Complex::display()
{
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
int main()
{
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
cin>>real>>imag;
Complex c2(real,imag);
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
Complex c3=c1+c2;
cout<<"c1+c2=";
c3.display();
int i;
cin>>real>>imag;
cin>>i;
c3=Complex(real,imag)+i;
cout<<"c1+i=";
c3.display();
cin>>i;
cin>>real>>imag;
c1=Complex(real,imag);
c3=i+c1;
cout<<"i+c1=";
c3.display();
return 0;
}