$1.$ Write a C$++$ program that does the following:

a$.$ Create a C$++$ file with the name problem$1.$cpp$.$

b$.$ Prompt the user to enter a numeric score.

c$.$ Print the letter grade that corresponds to the score entered by the user.

Above or equal to $90$: A

From $80($inclusive$)$ to below $90$: B

From $70($inclusive$)$ to below $80$: C

From $60($inclusive$)$ to below $70$: D

Below $60$: F

Sample run of the program:

Enter a numeric score: $97$

A

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