[此贴子已经被作者于2019-8-9 09:27编辑过]

程序代码：

class Student
{
public:
    int ID;
    string Name;
    Student(int id=0 , const string& name="null")
        :ID(id),Name(name){}
};

class myCompare
{
public:
    bool operator () (const Student& s1 ,const Student& s2) const
    {
        return s1.ID < s2.ID;
    }

};


int _tmain(int argc, _TCHAR* argv[])
{
    set<Student,myCompare> sc;

    Student s1(10,"小名") , 
            s2(20, "小二");

    sc.insert(s1);
    sc.insert(s2);

    return 0;
}

[此贴子已经被作者于2019-8-9 09:41编辑过]