C$++$ please

Write a program that reads student scores, gets the best score, and then assigns grades based on the following scheme:

Grade is A if score is $$ best $-10$

Grade is B if score is $$ best $-20$

Grade is C if score is $$ best $-30$

Grade is D if score is $$ best $-40$

Grade is F otherwise. implementation provided by the $C++$ standard library.

Write a program that reads student scores, gets the best score, and then assigns grades based on the following scheme:

Grade is A if score is $$ best $-10$

Grade is B if score is $$ best $-20$

Grade is $C$ if score is $$ best $-30$

Grade is D if score is $$ best $-40$

Grade is F otherwise.