Grade Book Created in C Programming Language

I am requesting a simple grade book created with C through Code::Blocks; I am unsure which version will work best for me as a teacher, so I just compiled four versions and it would be great if each one was a separate .c file. I can understand some C Programming and so the code should be well-formatted and well-commented. Also, please indicate if you need more than the pay range I have indicated and I will accommodate as needed. Thanks very much! Basic Grade Book, Option 1 Grade book should use an array to store percentage grades in the range from 0 to 100 (inclusive). The program should allow the user to indicate when they are entering grades. When the user is finished entering grades, the program should print out the grades entered for the user to view. Basic Grade Book, Option 2 Please modify the grade book code from Option 1 so that it uses heap memory to store percentage grades in the range from 0 to 100 (inclusive). The program should allow the user to indicate when they is done entering grades (since the user may not have grades to fill the whole array). When the user is done entering grades, the program should print out the grades entered by the user. Be sure to free the head memory before the program ends. Basic Grade Book, Option 3 Now modify the grade book code from Option 2 so that it uses custom functions to add grades to the array, print the grades entered, calculate the average grade (arithmetic mean, not letter grade), and report the highest and lowest grade entered. This version of the program does not need to use heap memory, though you are welcome to do so if you so choose. The program should allow the user to indicate when he or she is done entering grades (again, since the user may not have grades to fill the whole array). When the user is done entering grades, the program should print out the grades entered by the user. The program should also display the average grade, highest grade, and lowest grade. Basic Grade Book, Option 4 Finally, the last modification of the grade book program from Option 3 is to use a custom struct to hold the student's ID number and the percentage score for each item in the grade book. The program should accept the entry of ID numbers and percentage grades (0–100) until the user signals that he or she is done entering grades. The program should then print out the ID numbers and grades entered by the user, sorted by ID number.