Write a program to calculate and display your average and grade. Allow the user to enter five
scores. After values are entered, and the average calculated, test the result to determine whether
an A, B, C, D, D, F should be recorded. The scoring rubric is as follows: A- 90 – 100; B- 80-89;
C- 70-79; D- 60-69; F < 60. Use methods.