#include <iostream>
#include <cstdlib>
#include <vector>
using namespace std;

int main()
{
	const int a[] = {10, 20, 30};
	const size_t n = sizeof a / sizeof a[0];
	vector<int> v(a, a + n);    //born containing 10, 20, 30

	const vector<int>::size_type s = v.size();
	cout << "size == " << s << "\n\n";

	for (vector<int>::size_type i = 0; i < s; ++i) {
		cout << v[i] << "\n";   //cout << v.operator[](i) << "\n";
	}
	cout << "\n";

	for (vector<int>::iterator it = v.begin(); operator!=(it, v.end());
		it.operator++()) {
		cout << it.operator*() << "\n";
	}
	cout << "\n";

	for (vector<int>::iterator it = v.begin(); it != v.end(); ++it) {
		cout << *it << "\n";
	}
	cout << "\n";

	return EXIT_SUCCESS;
}