using C++

Create a program that uses vectors to store and display student grades. The program should:

1. Store student test scores in a vector of integers. The number of students should be input by the user and used to control inputting items into the vector.
2. Use the push_back member function to add the initial grades to the vector.
3. Display the results from the initial vector
4. Use the push_back member function to add 2 new elements to the vector.
5. Use a loop to display all of the student grades in the vector using the size member function.
6. Create a function that determines and prints the average of the student scores after receiving the vector and the size of the vector as arguments.