Question

How to insert new elements in vector at a specific position in C++

Answer 1

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

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

int main()
{
	vector<int> vec{ 1, 2, 3, 4, 5 };

	vector<int>::iterator it;

	it = vec.begin();
	it += 3; 

	std::insert_iterator<vector<int> > ins_it(vec, it); 
	
	*ins_it++ = 989;
	*ins_it = 501;

	for (it = vec.begin(); it != vec.end(); it++)
		cout << *it << ' ';

	cout << endl;

	return 0;
}

/*
run:

1 2 3 989 501 4 5

*/

 

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