Description
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。将运算符函数重载为非成员、非友元的普通函数。编写程序，求两个复数之和。
Input
两个复数
Output
复数之和
Sample Input
3 4
5 -10
Sample Output
(8.00,-6.00i)
#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
Complex();
Complex(double r,double i);
double get_real();
double get_imag();
void display();
private:
double real;
double imag;
};
Complex::Complex()
{
return;
}
Complex::Complex(double r,double i)
{
real=r;imag=i;
}
double Complex::get_real()
{
return real;
}
double Complex::get_imag()
{
return imag;
}
void Complex::display()
{
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
Complex operator +(Complex a,Complex b)
{
double i,j;
i=a.get_real() +b.get_real();
j=a.get_imag() +b.get_imag();
Complex c(i,j);
return c;
}
int main()
{
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
cin>>real>>imag;
Complex c2(real,imag);
Complex c3=c1+c2;
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
c3.display();
return 0;
}
Description
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。
Input
两个复数
一个复数和一个整数
一个整数和一个复数
Output
两个复数之和、复数和整数之和，整数和复数之和。
Sample Input
3 4 5 -10
3 4 5
5 3 4
Sample Output
c1+c2=(8.00,-6.00i)
c1+i=(8.00,4.00i)
i+c1=(8.00,4.00i)
#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)
{return Complex(real+c2.real,imag+c2.imag);}
Complex Complex:: operator+(int &i)
{return Complex(real+i,imag);}
Complex operator+(int&i,Complex &c)
{return Complex(i+c.real,c.imag);}
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;
}