Who's The Lucky Winner?

Question

Help, I can't finish this practice it goes like:
A local supermarket is running a promotion: each Nth customer will receive one item for free. Customers names are sequentially given as array of strings (see template).
Write a function that receives the array of customers, its size, and the N number as arguments, and prints the names of the lucky customers each in a new line.
Sample Input
3
Sample output
Rayan
Bruce
Richard
Mary

Answer 1

void lucky(string list[], int len, int N) {
for (int i=N-1; i<len; i+=N) {
cout << list[i] << endl;
}
}

Answer 2

If(i%n==0) cout << list[i] << endl;

Answer 3

#include <iostream>
#include <string>
using namespace std;
//complete the function
void winners(string array[], int size, int lucky) {
int whosNext = lucky;
for(int i=0; i < size; i++){
if(i == whosNext){
cout << array[i-1] << endl;
whosNext += lucky;
}
}
}
int main() {
string customers[] = {"Alice", "Bob", "Rayan", "Emma", "Ann", "Bruce", "Synthia", "Daniel", "Richard", "Sam", "Nick", "Mary", "Paul"};
//getting the lucky number as input
int n;
cin >> n;
//call function
winners(customers, 13, n);
return 0;
}