Question

How to insert elements to a set with insert_iterator in C++

Answer 1

#include <iostream>
#include <set>
#include <iterator>

using std::set;
using std::cout;
using std::endl;

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

int main()
{
	set<int> st;

	std::insert_iterator<set<int> > itr(st, st.begin());

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

	print(st);
}


/*
run:

1 2 3 4

*/

 

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