ask user to enter 10 grade and determine the average of grades. first you have to validate grade and then accept 10 valid grade.example of output:Please enter grade1: 99Please enter grade2:...

ask user to enter 10 grade and determine the average of grades. first you have to validate grade and then accept 10 valid grade. example of output: Please enter grade1: 99 Please enter grade2: 99 Please enter grade3: -2 the grade you entered is not valid, please enter grade again. Please enter grade3 99 Please enter grade4: 99 Please enter grade5: 99 Please enter grade6: 99 Please enter grade7: 99 Please enter grade8: 99 Please enter grade9: 101 the grade you entered is not valid, please enter grade again. Please enter grade9: 99 Please enter grade10: 99 the average of grades you entered is: 99