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