Question

How to insert elements to vector with back_insert_iterator in C++

Answer 1

#include <iostream>
#include <vector>
#include <iterator>

using std::vector;
using std::cout;
using std::endl;

void print(const vector<int>& vec)
{
	for (auto element : vec) {
		cout << element << ' ';
	}
	cout << endl;
}

int main()
{
	vector<int> vec;

	std::back_insert_iterator<vector<int> > itr(vec);

	*itr = 1;
	itr++;
	*itr = 2;
	itr++;
	*itr = 3;
	itr++;
	*itr = 4;

	print(vec);
}


/*
run:

1 2 3 4

*/

 

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