4) Write a script that will find a random number x. It will present the user with a choice of using 'ceil', 'round', or 'sign'. Do this as integers, e.g., 1 for ceil, 2 for round, and 3 for sign. You may use either menu or listdlg if you wish. Using a switch statement, the script will then calculate and print the requested function (e.g., if round' is chosen, the script will print the rounded value of x). 5) Modify the script in Question 4 to use a nested if-else statement instead