I need it in C++!

For the assignment, we will write a program that calculates the total grade for N classroom exercises as a percentage. The user should input the value for N followed by each of the N scores and totals. Calculate the overall percentage (sum of the total points earned divided by the total points possible) and output it as a percentage. Then determine the letter grade using the following scale: A: 93%-100% ; A: 90%-92.99% ; B+: 87%-89.99% ; B: 83%-86.99%; B-: 80%-82.99%; C+: 77%-79.99%; C: 73%-76.99%; C-: 70%-72.99%; D+: 67%-69.99%; D: 63%-66.99%; D-: 60%- 62.99%; F: Less than 60%. Match your program with the sample input and output as shown below. How many exercises to input? 3 score received for exercise 1: 10 Total points possible for exercise 1: 10 Score received for exercise 2: 7 Total points possible for exercise 2: 12 Score received for exercise 3: 5 Total points possible for exercise 3: 8