This needs to be done in C programming. Help would be much appreciated.

Create class__info. h file having the following. #define CLASS_SIZE 100 struct student (char *last_name; int student_id; char grade;} Using this header file, write a function that prints the average of grades of all students in a class. Let an A grade have value 4, a B grade have 3, and so forth. (See Section 12.2 Accessing a Member for more information, p. 394)