write in c not c++

9. Write a function that prints the name of the employee with the smallest Account num- ber. (5 points) 10. Write a function that prints the name of the employee with the highest Account number. 15 points 11. Write a function that prints the Account Number the summation of digits of which is the largest in the BST and prints the result along with the Employee's name. [5 points) 12. Write a function that searches for an account number in the BST and prints a relevant message. The account number is to be given by the user during run-time. [5 points] 13. Print the number of nodes in the Tree by using recursion. [2.5 points] 14. Add randomly (per program execution) the accounts numbers in an array and apply bubble sorting to sort them. Print the result in the console. 17.5 points 15. Explain theoretically how we would delete a node with two children in a BST and pro- vide a model coding example by providing screenshot of output - it can be either a standalone example or you can apply it on the above exercise. 15 points)