1: Rewrite the following nested if-else statement as a switch statement that accomplishes exactly the same thing. Assume that num is an integer variable that has been initialized, and that there are functions fl, f2, f3, and f4. Do not use any if or if-else statements in the actions in the switch statement, only calls to the four functions. if num < -2 || num > 4 f1 (num) else if num = 0 f2 (num) else f3 (num) end else f4 (num) end end Test your switch statement with num: a random integer from -5 to 5, and creating anonymous functions for fl-f4: fl=sin (num), f2=enum cos(num), f3= num?+2*num, f4= arctan(num). QUESTION 2: Write a script that will prompt the user for a quiz grade and error-check until the user enters a valid quiz grade. The script will then echo print the grade. For this case, valid grades are in the range from 0 to 10 in steps of 0.5. Do this by creating a vector of valid grades and then use any or all in the condition in the while loop.