#include
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();
void set();
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 -(Complex &c2)
{
Complex c;
c.real=real-c2.real;
c.imag=imag-c2.imag;
return c ;
}
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=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
return c;
}
void Complex::set()
{
cout<<"input real=";cin>>real;
cout<<" imag=";cin>>imag;
}
void Complex::display()
{
cout<<"("< } int main() { Complex c1,c2,c3,c4,c5,c6; c1.set(); c2.set(); c3=c1+c2; c4=c1-c2; c5=c1*c2; c6=c1/c2; cout<<"c1=";c1.display(); cout<<"c2=";c2.display(); cout<<"c1+c2=";c3.display(); cout<<"c1-c2=";c4.display(); cout<<"c1*c2=";c5.display(); cout<<"c1/c2=";c6.display(); return 0; }
同学,你只需要在度娘或百度文库上输入“C++中的复数类”后回车,即可找到你要的。
#include
^ ^
#include<iostream>
using namespace std;
class Complex
{
public:
Complex(){real=0;imag=0;}//默认构造函数
Complex(double r,double i){real=r;imag=i;}//构造函数
Complex operator+(Complex&);//定义重载运算符+函数
Complex operator-(Complex&);//定义重载运算符-函数
Complex operator*(Complex&);//定义重载运算符*函数
Complex operator/(Complex&);//定义重载运算符/函数
void display();//定义成员函数displayprivate:,double real;double imag;,};
//以下四个函数分别是重载+、-、*、/
Complex Complex::operator+(Complex&c){
return Complex(real+c.real,imag+c.imag);}
Complex Complex::operator-(Complex&c){
return Complex(real-c.real,imag-c.imag);}
Complex Complex::operator*(Complex&c){
return Complex(real*c.real,imag*c.imag);}
Complex Complex::operator/(Complex&c){
return Complex(real/c.real,imag/c.imag);}
//display函数
void Complex::display(){cout<<"("<<real;if(imag>=0)cout<<"+";
cout<<imag<<"i)"<<endl;}int main(){
Complex c1(4.4,5),c2(4,-10),c3;//定义三个Complex对象c1,c2,c3,c1和c2有默认值
c3=c1+c2;c3.display();c3=c1-c2;c3.display();c3=c1*c2;c3.display();c3=c1/c2;c3.display();
system("pause");return 0;}
return表示把程序流程从被调函数转向主调函数并把表达式的值带回主调函数,实现函数值的返回,返回时可附带一个返回值,由return后面的参数指定。
return通常是必要的,因为函数调用的时候计算结果通常是通过返回值带出的。如果函数执行不需要返回计算结果,也经常需要返回一个状态码来表示函数执行的顺利与否(-1和0就是最常用的状态码),主调函数可以通过返回值判断被调函数的执行情况。
好好看一下,运算符的重载,挺简单的