题目描述

1.定义一个复数类Complex，重载运算符+、-、*、/

#include<iostream>
using namespace std;
class Complex{
	public:
		Complex(){real = 0;image = 0;}
		Complex(double r,double i){real = r;image = i;}
		Complex operator+(Complex &c2);
		Complex operator-(Complex &c2);
		Complex operator*(Complex &c2);
		Complex operator/(Complex &c2);
		void display();
	private:
		double real;
		double image;
}; 
int main(){
	Complex c1(3,4),c2(5,-10),c3;
	c3 = c1 + c2;
	c3.display();
	c3 = c1 - c2;
	c3.display();
	c3 = c1 * c2;
	c3.display();
	c3 = c1 / c2;
	c3.display();
return 0;	
} 
void Complex::display(){
	if(image > 0)
		cout<<real <<"+"<<image<<"i"<<"\n";
	else if(image < 0)
		cout<<real<<image<<"i"<<"\n";
	else 
		cout<<real;
}
Complex Complex::operator+(Complex &c2){
	Complex temp;
	temp.real = real + c2.real;
	temp.image = image + c2.image;
	return temp;
}
Complex Complex::operator-(Complex &c2){
	Complex temp;
	temp.real = real - c2.real;
	temp.image = image - c2.image;
	return temp;
}
Complex Complex::operator*(Complex &c2){
	Complex temp;
	temp.real = real * c2.real - image*c2.image;
	temp.image = image*c2.real + real*c2.image;
	return temp;
}
Complex Complex::operator/(Complex &c2){
	Complex temp;
	temp.real = (real * c2.real + image*c2.image) / (c2.real*c2.real + c2.image*c2.image);
	temp.image = (image*c2.real - real*c2.image) /	(c2.real*c2.real + c2.image*c2.image);
	return temp;
}

2.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都可以是类对象，也可以其中一个是整数，顺序任意。例如c1 + c2 , 3 + c2 , c2 + 3。编写以上程序。

#include<iostream>
using namespace std;
class Complex{
	public:
		Complex(){real = 0;image = 0;}
		Complex(double r,double i){real = r;image = i;}
		Complex operator+(Complex &c2);
		Complex operator-(Complex &c2);
		Complex operator*(Complex &c2);
		Complex operator/(Complex &c2);
		Complex operator+(int &i);
		friend Complex operator+(int &,Complex &);
		void display();
	private:
		double real;
		double image;
}; 
int main(){
	Complex c1(3,4),c2(5,-10),c3;
	c3 = c1 + c2;
	c3.display();
	int i=5;
	c3 = i + c1;
	c3.display();
	c3 = c1 + i;
	c3.display(); 
return 0;	
} 
void Complex::display(){
	if(image > 0)
		cout<<real <<"+"<<image<<"i"<<"\n";
	else if(image < 0)
		cout<<real<<image<<"i"<<"\n";
	else 
		cout<<real;
}
Complex Complex::operator+(Complex &c2){
	Complex temp;
	temp.real = real + c2.real;
	temp.image = image + c2.image;
	return temp;
}
Complex Complex::operator-(Complex &c2){
	Complex temp;
	temp.real = real - c2.real;
	temp.image = image - c2.image;
	return temp;
}
Complex Complex::operator*(Complex &c2){
	Complex temp;
	temp.real = real * c2.real - image*c2.image;
	temp.image = image*c2.real + real*c2.image;
	return temp;
}
Complex Complex::operator/(Complex &c2){
	Complex temp;
	temp.real = (real * c2.real + image*c2.image) / (c2.real*c2.real + c2.image*c2.image);
	temp.image = (image*c2.real - real*c2.image) /	(c2.real*c2.real + c2.image*c2.image);
	return temp;
}
Complex Complex::operator+(int &i){
	Complex temp;
	temp.real = real + i;
	temp.image = image;
	return temp;	
}
Complex operator+(int &i,Complex &c2){
	Complex temp;
	temp.real = i + c2.real;
	temp.image = c2.image;
	return temp;
}