int sum(int arr[], int n)
{
    int sum = 0; // initialize sum

    // Iterate through all elements
    // and add them to sum
    for (int i = 0; i < n; i++)
    sum += arr[i];

    return sum;
}

int main()
{

   int arr[] = {1, 3, 4, 2};
    int n = sizeof(arr) / sizeof(arr[0]);
    printf("Suma niza je %d", sum(arr, n));
    return 0;
}