#include <iostream>  
#include <iterator>//使用back_inserter   
#include <algorithm>  
#include <vector>  
using namespace std;  
void main()  
{       
     vector<int> ivec;  
     try  
     {     
        fill_n(ivec.begin(),10,1);//error  should use fill_n (back_inserter(ivec), 10, 1);   
        for(vector<int>::iterator itbegin=ivec.begin(),itend=ivec.end();itbegin!=itend;++itbegin)  
            cout<<*itbegin<<endl;  
     }  
     catch (runtime_error err)  
     {    
        cerr << "Error: "<<err.what()<<endl;  
     }  
     catch(out_of_range or)  
     {  
         cerr << "Error: "<<or.what()<<endl;  
     }  
     catch(exception ex)  
     {  
        cerr << "Error: "<<ex.what()<<endl;  
     }  
        
}

fill_n (back_inserter(ivec), 10, 1);