Write a progtramthat translates a leter grade into a number grade. letter gradesare a b c d f, possibly followed by + or -. their numericvalues are 4, 3, 2, 1, and 0. there is not f+ or f-. a+ increasesthe numeric value by 0.3, a- decreases it by 0.3. however, and a+has the value 4.0.
enter a lettergrade:
b-
numeric value: 2.7
use the class grade with a method getnumericgrade.