map erase clear

#include <stdio.h>
#include <map>
#include <string.h>
#include <algorithm>
#include <iostream>

using namespace std;

int main( )
{   
    map<int,string>mp;
    mp[1] = "abc";
    mp[2] = "bcd";
    mp[3] = "efg";
    map<int,string>::iterator iter;
    iter = mp.find(1);
    // 数据的清空与删除
    //mp.erase(mp.begin( ),mp.end( ));
    mp.erase(iter);
    ///mp.clear( );
    for (iter = mp.begin( );  iter != mp.end( ); iter++)
    cout<<iter->first<<" "<<iter->second<<endl;
    return 0;
}