multimap多重映照容器

# include<map>
# include<cstdio>
# include<iostream>
using namespace std;
int main(int argc,const char *argv[])
{
    /*-----------------------------------*/
    //multimap对象创建，元素插入
    //multimap<string,double> m;
    // m.insert(pair<string,double>("Jack",300.5));
    // m.insert(pair<string,double>("Kity",200));
    //m.insert(pair<string,double>("kity",500));

    //m.insert(pair<string,double>("Jack",306));
    //multimap<string,double>::iterator it;
    //for(it = m.begin();it!=m.end();it++)
    //{
    //     cout<<(*it).first<<":"<<(*it).second<<endl;
    //}

    /*--------------------------------------*/
    //元素的删除
    //multimap<string,double> m;
    // m.insert(pair<string,double>("Jack",300.5));
    // m.insert(pair<string,double>("Kity",200));
    //m.insert(pair<string,double>("kity",500));

    //m.insert(pair<string,double>("Jack",306));
    //multimap<string,double>::iterator it;
    //for(it = m.begin(); it!=m.end(); it++)
    //{
    //    cout<<(*it).first<<":"<<(*it).second<<endl;
    //}
    //m.erase("Jack");
    //cout<<"the elements after deleted"<<endl;
    //for(it=m.begin(); it!=m.end(); it++)
    //{
    //   cout<<(*it).first<<":"<<(*it).second<<endl;
    //}

    /*-----------------------------------*/
    //元素查找
    multimap<string,double> m;
    m.insert(pair<string,double>("Jack",300.5));
    m.insert(pair<string,double>("Kity",200));
    m.insert(pair<string,double>("kity",500));

    m.insert(pair<string,double>("Jack",306));
    multimap<string,double>::iterator it;
    cout<<"all of the elements"<<endl;
    for(it = m.begin(); it!=m.end(); it++)
    {
        cout<<(*it).first<<":"<<(*it).second<<endl;
    }

    cout<<"the searching result"<<endl;
    it = m.find("Jack");
    if(it!=m.end())
    {
        cout<<(*it).first<<":"<<(*it).second<<endl;
    }
    else
    {
        cout<<"not find it"<<endl;
    }
    it = m.find("Nacy");
    if(it!=m.end())
    {
        cout<<(*it).first<<" "<<(*it).second<<endl;
    }
    else
    {
        cout<<"not find it"<<endl;
    }
}