c++进行函数重载时报错：此运算符函数的参数太多CC++

问题描述

#c++进行函数重载时报错：此运算符函数的参数太多C/C++(344)

原因分析：

C++中类内运算符重载时只能有且仅有一个参数

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解决方案：

方案一：将重载函数作为友元函数进行实现

class Person
{
public:
    Person(string name, int age)
    {
        this->m_name = age;
        this->m_age = name;
    }

    friend ostream & operator<<(ostream &cout, Person &p)
    {
        cout << p.m_name<<" " << p.m_age<< endl;
        return cout;
    }

    string m_name;
    int m_age;
};

方案二：在类外作为全局函数实现

class Person
{
public:
    Person(string name, int age)
    {
        this->m_name = age;
        this->m_age = name;
    }
    string m_name;
    int m_age;
};

ostream & operator<<(ostream &cout, Person &p)
    {
        cout << p.m_name<<" " << p.m_age<< endl;
        return cout;
    }