#include<map>#include<iostream>usingnamespace std;int main(){map <int, int> m1, m2, m3;map <int,int>::iterator m1_Iter;m1.insert( pair <int, int>(1, 10 ) );m1.insert ( pair <int,int> ( 2, 20 ) );m1.insert ( pair <int,int> ( 3, 30 ) );m2.insert ( pair <int,int> ( 10, 100 ) );m2.insert ( pair <int,int> ( 20, 200 ) );m3.insert ( pair <int,int> ( 30, 300 ) );cout << "The original map m1is:";for ( m1_Iter = m1.begin( ) ; m1_Iter != m1.end() ; m1_Iter++ )cout << " "<<m1_Iter->second;cout << "."<< endl;
return 0；
}