ITP$-150-$ Assignment $-$ Recursion $-$ Instructions

Requirements: Write a Python program that has three functions that do the following:

$1-$ Function: main

No parameters.

Return: None

Processing: Print welcome message. Call ask$\_$for$\_$int$()$ to get an int that the user has entered $($use low of $0$ and high of $996).$ Call factorial, passing in the integer that the user entered. Ask the user if they would like to loop again. If so$,$ loop again, if not, then quit the loop. Print goodbye message.

$2-$ Function: ask$\_$for$\_$int Parameters: low, high Return: int the user entered

Processing: Ask the user to enter an integer. Using exception handling, check to see if user entered a valid int. If not int, print error message and loop again. If valid int, also check to see if within low $/$ high range. If not in range, print error message and loop again. Return valid integer the user entered.

$3-$ Function name: factorial Parameters: num Return: the factorial answer

Processing: Compute the factorial using recursion. Do not use a loop within this function. Must use recursion. Watch the videos provided to get some clues on how to write this function.