Write a C ++ program that demonstrates the use of the (CASE) switch. The program takes the percentage (student percentage) as input and the result is output using the switch idication. For example, if...

Write a C ++ program that demonstrates the use of the (CASE) switch. The program takes the percentage (student percentage) as input and the result is output using the switch idication. For example, if the user enters the ratio = 88, he will see the result B.