【c++】实现一个复数类

// 实现一个复数类（complex）//要求：1：实现不带参 / 带参数 /带默认参数的几种构造函数。//      2:实现拷贝构造 / 析构函数。#include <iostream>using namespace std;// 带参数的构造函数class complex{private:double _real;double _image;public:void print();complex(double _r, double _i);~complex();};complex::complex(double _r, double _i){_real = _r;_image = _i;cout<<"the parameterless constructor"<<endl;}/* 不带参数的构造函数class complex{private:double _real;double _image;public:void print();complex();~complex();};complex::complex(){_real = 0;_image = 0;cout<<"with no arguments constructor"<<endl;}*//* 带默认参数的构造函数class complex{private:double _real;double _image;public:void print();complex(double _real = 0,double _image = 0);~complex();};complex::complex(double _r, double _i){_real = _r;_image = _i;cout<<"with the default constructor"<<endl;}*//* 拷贝构造class complex{private:double _real;double _image;public:void print();complex(double _r, double _i){_real = _r;_image = _i;}complex(complex const & comple);~complex();};complex::complex(complex const & comple){_real = comple._real;_image = comple._image;cout<<"copy structure"<<endl;}*/complex::~complex(){cout << "destructor" << endl;}void complex::print(){cout << "复数是：" << _real << "+" <<_image << "i" << endl;}int main(){double a, b;//double a;cout << "请输入两个数：";cin >> a >> b;//cin >> a;//complex comp(a);complex comp(a,b);//complex comp(1, 2);//complex comp;//complex comp1(comp);comp.print();//comp1.print();return 0;}