#include <iostream>
#include <vector>

using namespace std;

int main() {
  vector<int> vet;
  vector<int>::iterator p;

  for (int i = 0; i <= 4; i++)
    vet.push_back(i);

  for (p = vet.begin(); p != vet.end(); p++)
    printf("%d\n", *p); // when vet.end(), p is a Sentinel

  return 0;
}