标准重载代码

#include "iostream"
using namespace std;

class  Complex
{
private:
    int a;
    int b;
    friend ostream& operator<<(ostream &out, Complex &c1);

public:
    Complex(int a = 0, int b = 0)
    {
        this->a = a;
        this->b = b;
    }
    void printCom()
    {
        cout<<a<<"+"<<b<<"i"<<endl;
    }
public:
    //通过类的成员函数实现-操作
    Complex operator-(Complex &c2)
    {
        Complex tmp;
        tmp.a = this->a -c2.a;
        tmp.b = b -c2.b;
        return tmp;
    }
    Complex operator+(Complex &c2)
    {
        Complex tmp;
        tmp.a = this->a + c2.a;
        tmp.b = b + c2.b;
        return tmp;
    }

    // 前置--
    Complex& operator--()
    {
        this->a--;
        this->b--;
        return *this;
    }

    // 前置++
    Complex& operator++()
    {
        this->a++;
        this->b++;
        return *this;
    }

    //后置--
    Complex operator--(int)
    {
        Complex tmp = *this;
        this->a --;
        this->b --;
        return tmp;
    }

    //后置++
    Complex operator++(int)
    {
        Complex tmp = *this;
        this->a ++;
        this->b ++;
        return tmp;
    }
};

//1操作符重载，首先是通过函数实现的。
int main()
{
    Complex c1(1, 2), c2(3, 4);

    Complex c3 = c1 + c2;
    c3.printCom();

    Complex c5 = c1 - c2 ;
    c5.printCom();

    ++c2;
    c2.printCom();

    --c2;
    c2.printCom();

    c2++;
    c2.printCom();

    c2--;
    c2.printCom();

    return 0;
}

备份地址: 【标准重载代码】