Description
Write multiway if-else statements in which letter grades are assigned based a numeric grade based on this “ten point” scheme:
if the numeric grade is not less than 90, the letter grade is an A,
if the numeric grade is not less than 80, the letter grade is a B,
if the numeric grade is not less than 70, the letter grade is C,
if the numeric grade is not less than 60, the letter grade is D,
otherwise the letter grade is F.
Input
Given a postive number numeric_grade
Output
Corresponding letter_grade