Rewrite or alter this program using boolean. Also, include code that checks to see if the score is within the range (0-100) and, if not, prompts the user to enter another #. Thank you in advance.

Quick overview of what the code does:

- Prompts the user to enter a score (1-100)

- A Function that uses switch / case to determine and output the Letter grade

- Repeats for 3 scores.

- Calculates the average score and then the Final Letter Grade