#include <iostream>
#include <algorithm>

using namespace std;

void delete_element(int x[], int& n, int k);

int main()
{
	int a[] = { 1,2,3,4,5,6,7,8,9,10 };
	int n = 10;
	delete_element(a, n, 0);
	for (int i = 0; i < n; ++i)
		cout << a[i] << endl;
	return 0;
}


void delete_element(int x[], int& n, int k)
{
	if (k < 0 || k > n - 1)
	{
		cout << "Wrong index of k " << k << endl;
		return;
	}

	std::copy(x + k + 1, x + n, x + k);
	n--;
}