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How do you come to the output?

TinnyMintz (11)
Code:
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void createList(node*& head)​

{​

  for (int i = 5; i < 20; i++)​

  {​

    bool condition = true;​

    for (int j = 2; j <= i / 2; ++j)​

    {​

      if (i % j == 0)​

      {​

        condition = false;​

        break;​

      }​

    }​

 ​

    if (condition)​

    {​

      node* temp = new node(i);​

      temp->next = head;​

      head = temp;​

    }​

  }​

 ​

  node* temp = head;​

  while (temp != nullptr)​

  {​

    cout << temp->value << " ";​

    temp = temp->next;​

  }​

}​

 ​

int main(){​

  node* head;​

  head = nullptr;​

  createList(head);​

}​


The answer to this is 19 17 13 11 7 5, but how does the answer come to be? I am not sure why the output is that, would someone be able to explain why?
Last edited on
helios (17574)
It gets the prime numbers between 5 and 20 and sequentially prepends them to a linked list, then traverses that list, thus printing them in decreasing order.
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