STL常用运算符重载-白红宇

STL常用运算符重载

阅读量：302 次

发布时间：2019-03-03

本文共 924 字，大约阅读时间需要 3 分钟。

bool operator<(const Person& p)const //小于运算符

friend ostream& operator<<(ostream& os,const Person& p1) //输出

#include
   
    #include
    
     #include
     #include
      
       using namespace std;class Person{   public:	Person(string name, string no, int age)	{   		this->sname = name;		this->sno = no;		this->sage = age;	}	bool operator<(const Person& p)const 	{   		if (this->sno < p.sno)			return true;		return false;	}	friend ostream& operator<<(ostream& os,const Person& p1) 	{   		cout << "姓名:" << p1.sname << "   学号:" 			<< p1.sno << "   年龄：" << p1.sage << endl;		return os;	}public:	string sname;	string sno;	int sage;};int main(){   	Person p3("王麻子", "18170025", 18);	Person p1("张三", "18170021", 19);	Person p2("李四", "18170022", 20);	set
       
         st;	st.insert(p2);	st.insert(p1);	st.insert(p3);	set
        
         ::iterator it; for (it = st.begin(); it != st.end(); it++) cout << *it; system("pause"); return 0;}