# does anyone have solution

*label*Science

*timer*Asked: Dec 29th, 2015

**Question description**

You are given a file called “students.txt” that contains students’ ID and marks as follows:

200121101 9 19 29 29

200121102 5 10 14 30

200121103 6 15 20 20

200121104 10 17 25 35

200121105 10 18 26 37

200121106 8 14 23 32

200121107 10 20 30 40

200121108 10 19 25 30

200121109 6 8 6 17

200121110 5 15 20 30

200121111 9 9 20 29

200121112 10 10 29 9

Each line consists of a student’s ID, first_mark, midterm_mark, lab_mark and final_mark. The number of students is not specified in advance.

Write a program that calls the following methods:

- ReadData that reads data from “students.txt”. It should take as parameters an array of String studentID and a two-dimensional array of int marks. It stores the students’ ID in the array studentID and the students’ marks in the array marks. This method returns the number of students found in the file.
- CalculateTotalMarks that takes as parameters the two-dimensional array of int marks, an array of int total and the number of students. It should calculate the total mark for each student and store it in total.
- FindGrades that takes as parameters the array of int total, an array of char grades and the number of students. It should find the appropriate character grade for each student and store it in grades.
- calculateAverage that takes as parameters the array of int total and the number of students. It should calculate and return the average class mark.
- FindMax that takes as parameters the array of int total and the number of students. It should find and return the class highest mark.
- FindMin that takes as parameters the array of int total and the number of students. It should find and return the class lowest mark.
- PrintResults that takes as parameters the array of String studentID, the array of int total, the array of char grades, and the number of students. It should output in the file ‘Results.txt” the following data:

a) The Student’s ID, total mark, and grade for all students who passed the course.

b) The Student’s ID, total mark, and grade for all students who failed the course.

c) The total number of students.

d) The average class mark.

e) The highest mark.

f) The lowest mark.

Sample output data are shown below:

Students who passed are:

200121101 86 B

200121103 61 D

200121104 87 B

200121105 91 A

200121106 77 C

200121107 100 A

200121108 84 B

200121110 70 C

200121111 67 D

Students who failed are:

200121102 59 F

200121109 37 F

200121112 58 F

The total number of students: 12

The average total mark: 73.08333333333333

The highest mark: 100

The lowest mark: 37