3.迭代器

#include<iostream>
#include<iterator>
using namespace std;

int main()
{
	cout << "input data" << endl;
	istream_iterator<int>a(cin);
	istream_iterator<int>b;
	while (1)
	{
		cout << *a << endl;
		a++;
		if (a == b)
		{
			break;
		}
	}
}