Write a program with a function

  

Write a program with a function that is passed an array of characters containing letter grades from our previous question, and prints a report that shows the total number of occurrences of each letter grade. Your function should accept both lower and upper case grades, for example, both ‘b’ and ‘B’ should be bucketed into your running total for B grades. Any grade that is invalid should be bucketed as a grade of ‘I’ for Incomplete. You must use a switch statement, and your function should accept an array of any size

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