c++运算符重载实验报告

实验，help帮忙看看是要写什么啊~~本cn毫无头绪啊！！

class Complex //复数类
{
        double real, image; //复数的实部和虚部
public:
        //构造函数
        //使用在操作类内和类外两种方法实现类的以下运算符重载函数
        //1、运算符输入>>和输出<<，并能够实现连续运算
        //2、运算符乘法*，并能够实现连续运算
        //3、运算符下标[]，下标值为0时返回实部、为1时返回虚部，其他值提示出错
        //4、运算符前置++和后置++，对实部加1
        //5、运算符强制类型转换()，把浮点型数强制转换为实部为0虚部为此数的复数
};

void main()
{
        Complex c1(2.0, 3.5), c2(5, 8.5), c3, c4;
        cin>>c3>>c4;
        cout<<c2++*c3<<c4;
cout<<++(Complex)c2[0];
cout<c1+c3+4.7;
}

#include<iostream>
#include<cstdlib>
#include<string>
using namespace std;

class Complex {
    double real, image;//复数的实部和虚部
public:
    Complex(){}
    Complex(double r, double i) :real(r), image(i) {}//构造函数
    Complex(double i):real(0),image(i){}
    Complex& operator +(Complex& c) {
        real += c.real;
        image += c.image;
        return *this;
    }//类内对象与对象相加

    Complex& operator*(Complex c) {
        double tmp = real;
        real = real * c.real - image * c.image;
        image = tmp * c.image + image * c.real;
        return *this;
    }//类内乘法

    double& operator[](int i) {
        if (i == 0) {
            return real;
        }
        else if (i == 1) {
            return image;
        }
        else
            cout << "输入错误！" << endl;
            exit(0);
    }//类内下标
    //[]运算符不能被重载为全局函数


    Complex operator++(int) {
        Complex tmp = *this;
        real += 1;
        return tmp;
    }//类内后置++

    friend ostream& operator<<(ostream& os, const Complex& c);//声明友元函数
    friend istream& operator>>(istream& is, Complex& c);
    friend Complex operator++(Complex c);
    friend Complex& operator+(Complex& c, double i);
};

ostream& operator<<(ostream& os, const Complex& c) {
    os << c.real << "+" << c.image << "i";
    return os;
}//类外输出

istream& operator>>(istream& is, Complex& c) {
    string str;
    is >> str;
    int pos = str.find("+", 0);
    string tmp = str.substr(0, pos);
    c.real = atof(tmp.c_str());

    tmp = str.substr(pos + 1, str.length() - pos - 2);
    c.image = atof(tmp.c_str());
    return is;
}//类外输入

Complex operator++(Complex c) {
    c.real += 1;
    return c;
}//类外前置++

Complex& operator+(Complex& c, double i) {
    c.real += i;
    return c;
}

int main()
{
    Complex c1(2.0, 3.5), c2(5, 8.5), c3, c4;
    cin >> c3 >> c4;
    cout << c2++ * c3 << " " << c4 << endl;
    cout << c2[0] << endl;
    cout << ++((Complex)c2[0]) << endl;
    cout << c1 + c3 + 4.7;
}

咱俩的实验报告一样的，我也不会，你要是写出来告诉我一声，谢谢了