学习set容器

# include<iostream>
# include<cstdio>
# include<set>
using namespace std;
struct myComp
{
    bool operator()(const int &a,const int &b)
    {
        if(a!=b)
            return a>b;
        else
            return a<b;
    }
};
struct Info
{
    string name;
    float score;
    bool operator < (const Info &a)const
    {
        return a.score < score;
    }
};
int main(int argc,const char * argv[])
{
    /*---------------------------------------------*/
    //本部分insert,实现有序和去重
    //set<int>s;
    //s.insert(8);
    //s.insert(1);
    //s.insert(12);
    //s.insert(6);
    //s.insert(8);

    //set<int>::iterator it;
    //for(it = s.begin();it!=s.end();it++)
    //{
    //    cout<<*it<<endl;
    //}

    /*----------------------------------------------*/
    //reverse
    //set<int>s;
    //s.insert(8);
    //s.insert(1);
    //s.insert(12);
    //s.insert(6);
    //s.insert(8);

    //set<int>::reverse_iterator rit;
    //for(rit = s.rbegin();rit!=s.rend();rit++)
    //{
    //    cout<<*rit<<endl;
    //}

    /*-----------------------------------------------*/
    //erase
    //set<int>s;
    //s.insert(8);
    //s.insert(1);
    //s.insert(12);
    //s.insert(6);
    //s.insert(8);

    //s.erase(6);
    //set<int>::reverse_iterator rit;
    //for(rit = s.rbegin(); rit!=s.rend(); rit++)
    //{
    //    cout<<*rit<<endl;
    //}
    //s.clear();
    //cout<<s.size()<<endl;


    /*-------------------------------------------*/
    //元素的检索
    //set<int>s;
    //s.insert(8);
    //s.insert(1);
    //s.insert(12);
    //s.insert(6);
    //s.insert(8);


    //set<int>::iterator it;

    //it = s.find(6);
    //if(it!=s.end())
    //   cout<<*it<<endl;
    //else
    //    cout<<"not find it"<<endl;
    //it = s.find(20);
    //if(it!=s.end())
    //    cout<<*it<<endl;
    //else
    //    cout<<"not find it"<<endl;

    /*---------------------------------------*/
    //自定义比较函数
    //set<int,myComp>s;
    //s.insert(8);
    //s.insert(1);
    //s.insert(12);
    //s.insert(6);
    //s.insert(8);
    //set<int,myComp>::iterator it;
    //for(it = s.begin(); it!=s.end(); it++)
    //{
    //    cout<<*it<<endl;
    //}

    /*-----------------------------------------*/
    //另一种自定义比较
    //set<Info>s;
    //Info info;
    //info.name = "Jack";
    //info.score = 20.5;
    //s.insert(info);
    //info.name = "Nacy";
    //info.score = 60.5;
    //s.insert(info);
    //set<Info>::iterator it;
    //for(it = s.begin();it!=s.end();it++)
    //{
    //    cout<<(*it).name<<":"<<(*it).score<<endl;
    //}


}