#include #include #include "data_structures.h" void pre_order(struct node *cur) { if (cur == NULL) { return; } printf("%d ", cur->val); pre_order(cur->left); pre_order(cur->right); } void in_order(struct node *cur) { if (cur == NULL) { return; } in_order(cur->left); printf("%d ", cur->val); in_order(cur->right); } void post_order(struct node *cur) { if (cur == NULL) { return; } post_order(cur->left); post_order(cur->right); printf("%d ", cur->val); } int main() { struct node *root = NULL; root = insert(root, 10); int val, n = 0; printf("How many integers do you want to add to root with val 10?\n"); scanf("%d", &n); for (int i = 0; i < n; ++i) { printf("Enter a number \n"); scanf("%d", &val); insert(root, val); in_order(root); printf("\n"); } return 0; }