C / C++ / MFC

int* AllocateIntArray(int size)
{
return new int[size];
}

le* first = list->head;
le* second = list->head ? list->head->next;
 
while(second != first && second != NULL) {
    second = second->next;
    if(second != first && second != NULL) {
        second = second->next;
        first = first->next;
    }
}
 
if(second == NULL)
    printf("No cycle\n");
else
    printf("There is a cycle at %p (v = %d)\n", second, second->value);