map和 unorder_map的遍历

    map<int,int> record;
    map<int,int> ::iterator it；//

     it=record.begin();
	 while(it != record.end())
		 {
		 	cout<<"first->:"<<it->first<<endl;
		 	cout<<"second->:"<<it->second<<endl;
		 	it++;
		 }
		}