C++ Iterator

#include<iostream>
#include<vector>
#include<iterator>
using namespace std;
int main()
{
    int i;
    vector <int> ar;

    ar.push_back(34);
    ar.push_back(73);
    ar.push_back(57);
    ar.push_back(33);
    ar.push_back(14);

    vector <int> :: iterator an;

    for(i=0;i<ar.size(); i++)
    {
        cout << ar[i] << endl;
    }

    cout << endl;

    an = ar.begin();

    cout << *an << endl;

    an++;

    cout << *an << endl;

    return 0;
}


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