#include <stdio.h>
#include <stdlib.h>
#define MAX 10

int input_arr(int n, int *a)
{
    for (int i = 0; i < n; i++)
    {
        printf("Input the element of the array: ");
        if (scanf("%d", &a[i]) != 1)
            return EXIT_FAILURE;
    }
    return EXIT_SUCCESS;
}

int selection(int *main_arr, int *answr_arr, int n)
{
    int k = 0;
    int flag = 0;

    for (int i = 0; i < n; i++)
    {
        if (main_arr[i] > 1)
        {
            for (int j = 2; j < main_arr[i]; j++)
            {
                if (main_arr[i] % j == 0)
                {
                    flag = 1;
                }
            }
            if (flag != 1)
            {
                answr_arr[k] = main_arr[i];
                k++;
            }
            flag = 0;
        }
    }
    if (k == 0)
    {
        printf("There are no prime numbers in the sequence");
        return EXIT_FAILURE;
    }
    else
    {
        for (int i = 0; i < k; i++)
            printf("%d", answr_arr[i]);
    }
    return EXIT_SUCCESS;
}

int main()
{
    int main_arr[MAX];
    int answr_arr[MAX];
    int n;

    int rc;

    printf("Input the number of array elements: ");
    rc = scanf("%d", &n);

    if (rc != 1 || n <= 0 || n > 10)
    {
        printf("Error");
        return EXIT_FAILURE;
    }

    if (input_arr(n, main_arr) == EXIT_FAILURE)
        return EXIT_FAILURE;

    if (selection(main_arr, answr_arr, n) == EXIT_FAILURE)
        return EXIT_FAILURE;

    return EXIT_SUCCESS;
}