Question: Letter Grade. Your program should ask the user to input a grade (integer from 1-100) and then output the letter grade.
Scale: Greater than 90 is an "A"; Greater than 80 to 90 is a "B", Greater than 70 to 80 is a "C", Greater than 60 to 70 is a "D", and 60 or less is an "F".
Please show me all the working and provide the answer.