실행하면 두번째 입력부터 펑~ 세그먼테이션 폴트..



== MENU ==

 1. Insert(i)

 2. Delete(d)

 3. Search(s)

 4. Lists(l)

 5. Quit(q)

-> i apple


Enter a word for insert

 -> new -> apple

Inserted apple


== MENU ==

 1. Insert(i)

 2. Delete(d)

 3. Search(s)

 4. Lists(l)

 5. Quit(q)

-> i banana


Enter a word for insert

Segmentation fault: 11