Program to implement a binary search tree.
#include #include #include struct btreenode { struct btreenode *leftchild ; int data ; struct btreenode *rightchild ; } ; void insert ( struct btreenode **, int ) ; void inorder ( struct btreenode * ) ; void preorder ( struct btreenode * ) ; void postorder ( struct btreenode * ) ; void main( ) { struct btreenode *bt ; int req, i = 1, num ; bt = NULL ; /* empty tree */ clrscr( ) ; printf ( "Specify the number of items to be inserted: " ) ; scanf ( "%d", &req ) ; while ( i++ { printf ( "Enter the data: " ) ; scanf ( "%d", &num ) ; insert ( &bt, num ) ; } printf ( "\nIn-order Traversal: " ) ; inorder ( bt ) ; printf ( "\nPre-order Traversal: " ) ; preorder ( bt ) ; printf ( "\nPost-order Traversal: " ) ; postorder ( bt ) ; } /* inserts a new node in a binary search tree */ void insert ( struct btreenode **sr, int num ) { if ( *sr == NULL ) { *sr = malloc ( sizeof ( struct btre...