C++ please

Write a program to help a faculty member grade a multiple-choice test and determine the student's grade on the test. The test contains 20 questions, you are given the student's answers, as well as the correct answers to the test. Each question answered correctly is worth 5 points. Your program should contain the following 2 functions a) A function to determine the students score on the test b) A function to output the student's letter grade Correct Answer A,D,D,C,A,B,D,D,B,A,C,C,A,D,B,A,D,C,A,A Student Answer C,D,D,B,A,B,D,D,B,A,A,C,A,D,B,D,D,C,A,A