A Map instance

#pragma warning(disable:4786)
//...
#include <map>
#include <string>
//...
#include <iostream>
using namespace std;

class strmap1
{
    typedef std::map<std::string, int> type_map;
    typedef type_map::iterator type_iter;

    type_map    mm;
    type_iter   it;
    int         id;

public:
    strmap1() : it(NULL), id(0)
    {
        //init
        id = 0;
        mm["i"] = ++id;
        mm["you"] = ++id;
        mm["he"] = ++id;
    }

    int find(const char* s)
    {
        cout << "find " << s << endl;
        int ret = 0;
        it = mm.find(s);
        if (mm.end() != it) {
            ret = it->second;
            cout << s << "'s id is " << ret << endl;
        } else {
            cout << "can't find " << s << "'s id" << endl;
        }
        return ret;
    }

    int insert(const char* s)
    {
        cout << "insert " << s << endl;
        int ret = ++id;
        mm.insert(type_map::value_type(s, ret));
        //mm[s] = ret;//ok
        return ret;
    }

    void remove(const char* s)
    {
        cout << "remove " << s << endl;
        mm.erase(s);
    }
};

int main(int argc, char* argv[])
{
    cout << "(strmap1)string map 1(simple use std::map<string, int>)" << endl;
    strmap1 o;

    cout << endl;
    o.find("i");
   
    cout << endl;
    o.find("she");
   
    cout << endl;
    o.find("you");
    o.find("he");

    cout << endl;
    o.insert("she");
    o.remove("you");
    o.remove("he");
   
    cout << endl;
    o.find("you");
    o.find("he");
    o.find("she");
   
    cout << endl;
    cout << "haha~~~now only i and she" << endl;
    return 0;
}

--输出结果--

(strmap1)string map 1(simple use std::map<string, int>)

find i
i's id is 1

find she
can't find she's id

find you
you's id is 2
find he
he's id is 3

insert she
remove you
remove he

find you
can't find you's id
find he
can't find he's id
find she
she's id is 4

haha~~~now only i and she