C++で、与えられた2つの配列から共通集合を取り出す

howtouse_intersection.cpp

#include <iostream>
#include <algorithm>
using namespace std;
int main(void)
{
	int primary[] = { 1, 2, 4, 3, 5, 7, 11, 13 };
	int number[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
	int result[256];
	int* ret;

	ret = std::set_intersection(number, number + 15,
				    primary, primary + 7,
				    result);

	for (int* p = result; p != ret; p++)
		cout << *p << endl;
	return 0;
}