Write a complete program that: 1. Prompts the user to enter a letter grade and reads in a letter grade from the keyboard as a char. 2. Uses a switch statement to output the appropriate range for the grade entered in (2). 3. If a letter is entered in (2) that is not a valid letter grade an error should be displayed. This error handling should be done via the default case of your switch statement. Valid letter grades are: A, a, B, b, C, c, D, d, F, and f. Ranges for each letter grade: GRADE RANGE A 90-100 В 80-89.99 C 70-79.99 60-69.99 F 0-59.99

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