Функция "Циклический сдвиг"

#include <iostream>
using namespace std;

void shift(int *data, int n, int k) {
    if (k > 0)
        for (int i = 0; i < k; ++i) {
            int tmp = data[n-1];
            for (int i = n-1; i > 0; --i)
                data[i] = data[i-1];
            data[0] = tmp;
        }
    if (k < 0) {
        k *= -1;
        for (int i = 0; i < k; ++i) {
            int tmp = data[0];
            for (int i = 0; i < n-1; ++i)
                data[i] = data[i+1];
            data[n-1] = tmp;
        }
    }
}

void read_array(int *data, int *n, int *k) {
    cin >> *n;
    for (int i = 0; i < *n; ++i)
        cin >> data[i];
    cin >> *k;
}

void print_array(int *data, int n) {
    for (int i = 0; i < n; ++i)
        cout << data[i] << " ";
}

int main() {
    int data[100] = {}, n, k;
    read_array(data, &n, &k);
    shift(data, n, k);
    print_array(data, n);
    return 0;
}