Hello i got problem in binary tree code. below is my code. When i select pre, post or inorder, the .exe is not responding.. Since in my binary tree theres no roots yet.. who do i solve it? It need condition or what?
Solved.. And i have another problem.. When i entering the course for example Operating System.. the program keep looping... Since i cannt put any spaces between the "Operating" and "System".. any idea?