JavaScript Program 3

Prompt the user for how many grades to average. The user should then be prompted to enter the number of grades.

Print a letter grade based on the grade entered. For example:

• 90-100 A
• 80 less than 90 B
• 70 less than 80 C
• 60 less than 70 D
• Less than 60 F

If the grade average is greater than 100, display an error to the user.

If the grade average is less than 0 display the grade as F to the user

For values 0 <= X <= 100 display the corresponding letter grade.

Must use a Switch statement to display letter grades.