primer_c ++ _ iterator

 

#include <iostream>
#include <vector>

using namespace std;

int main() 
{
	vector<int> v1{ 1, 2,3,4,5,6,7,8,9,10 };

	for (auto i = v1.begin(); i != v1.end(); i++) {
		(*i) *= 2;
		cout << *i<<endl;
	}
	return 0;
}