You are asked to design an application for the administration of ITD Canada and the code you are going to provide is in C language.

At ITD Canada, we have a number of classes each semester that must be inserted as user input.
In each class, we have various numbers of students that must be asked from the user.
Each student receives one grade between 0 to 100 and it could be either decimal or an integer number.
If the grade is 80-100 he will be marked as A.
If the grade is 60-80 he will be marked as B.

If the grade is 50-60 he will be marked as C.

If the grade is 0-50 he will be marked as Failed.


Your code needs to calculate and print out the mean (average) of the grades in each class.

please code should have comment for evey step

4. Assume an Excel 2010 worksheet contains the grades (in percentage) for Test 1 of students in EECS1520. We are asked to use an Excel function to count the number of students who scored more than 60%. Assuming there is one grade per student in the worksheet which Excel function do you use? a) SUM b) COUNTIF X c) AVERAGE d) MAX e) None of the above

The University of Southern North Dakota Testing department needs to write a grading program for multiple choice test. It should be capable of grading tests with up to 50 questions and for any number of students. The program should grade individual exams and calculate the grade for the student based on the number of questions, each being the same value out of 100. For example, if there are 25 questions each is worth 4. This program must be written in Ada.  

The program must also determine how many times each score was earned on the test.  This is a count or frequency. The program must show the number of students graded and the class average.

The program should have 

• an input file. The program asks the user for the name of the file. The file name is entered at the keyboard. All subsequent data is read from the file.
• a score frequency count. Every time a score is computed increment a counter for that value. Any score from 0 to 100 is possible (integer only), so the program needs 101 counters!
• A record type Student_Type containing the student ID and their answers, and t he final grade for the exam.
• A package containing Student_Type as private and operations for reading Student_Type, grading the exam and displaying the student ID and grade.

Behavior not assigned to functions may be done in main.

The program will accept the input file name from the keyboard after prompting the user for the file name.

The first line in the input files contains the number of questions on the exam, the second the answer key, and all following lines contain the student ids and responses to the questions.

The input shown here

20

2 1 1 3 4 4 5 3 2 1 2 4 5 2 1 1 3 4 4 2

12345 2 1 1 1 4 4 3 3 2 1 2 4 5 2 2 1 4 4 4 3

23456 2 1 1 2 3 4 5 3 2 1 2 4 5 2 1 2 3 4 4 1

14567 1 2 1 3 4 4 3 3 2 1 2 4 5 2 2 1 4 4 4 2

15678 2 1 2 3 3 4 5 3 1 1 3 4 5 2 1 1 3 4 4 2

16789 2 1 1 3 4 4 5 3 2 1 2 4 5 2 1 1 3 4 4 2

17890 2 1 1 3 4 4 5 3 2 1 2 4 5 2 2 1 4 4 4 3

12245 1 2 1 3 4 4 3 3 2 1 4 4 5 2 2 1 4 4 4 2

12256 2 1 2 3 3 4 5 3 1 1 2 4 5 2 1 1 3 4 4 2

22345 2 1 1 2 3 4 5 3 2 1 2 4 5 2 1 2 3 4 4 1

22456 1 2 1 3 4 4 3 4 2 1 2 4 5 2 2 1 4 4 4 2

13244 2 1 1 3 3 4 5 3 1 1 3 4 5 2 1 1 3 4 4 2

22458 2 2 1 3 4 4 5 3 2 1 2 4 5 2 1 1 3 4 4 2

23678 2 1 3 3 4 4 5 3 2 1 2 4 5 2 2 4 4 4 4 3

24567 2 1 2 3 3 4 5 3 2 1 2 4 5 1 1 2 3 3 4 1

11412 2 1 2 3 3 4 5 3 1 2 2 4 4 2 1 1 3 4 4 2

produces this output:

Enter file name:scantron.txt

Student ID    Score

===================

12345          75

23456          80

14567          75

15678          80

16789         100

17890          85

12245          70

12256          85

22345          80

22456          70

13244          85

22458          95

23678          75

24567          70

11412          75

===================

Tests graded = 15

===================

Score     Frequency

===================

100           1

 95           1

 85           3

 80           3

 75           4

 70           3

===================

Class Average = 80

 (*** Beware!! The data files can vary in number of questions up to 50, and there can be any number (at least 1) of students. Your program must be flexible! ***)

(c) Consider the following class: public class Student Grades private int ( grades; 1/loads values into grades from a file public void initializeFromFile(String filename) ....! //gets the total number of grades entered public int get NumRecords () (....) public class WebCT 1 public static void main(String[] args) Student Grades grades = new Student Grades(); grades.initializeFromFile("records. L.sv"); System.out.println("There are " + grades.length file.") " grades in that The goal of the program is to load the files and then print the total number of grades in the file. However, when you try to compile the above classes, you get the following error: WebCT.java:5: cannot find symbol symbol : variable length location: class Student Grades System.out.println("There are " + grades.length + " grades in that file." Explain why the crror occurs and write the code to fix it (while maintaining the intended functionality).