You will write a C# program that will utilize arrays to store students$$ names, ID numbers, and

grades. Your program will also calculate average grades for each student. Three one dimensional

arrays will be created in the main method to store the ID number $($integers$),$ name $($strings$),$ and

number of courses $($integer$)$ for each student. Another $2-$dimensional rectangular array $($double

type$)$ will be created to store students$$ grades. Each row of this $2-$dimensional array will store the

grades for one student. In a row, each column will store the grade of a course for that student.

Additionally, an integer variable will keep track of the total number of students. The maximum

number of students and the maximum number of courses for each student will be $10$ and $5,$

respectively. The program will ask the user to input one of four options: R or r $($for registering a

student$),$ E or e $($for entering grade of a student$),$ C or c $($for calculating the average grade of a

student$),$ and Q or q to quit. Your program will use a loop to check for valid choices. The program

will continue taking inputs until the user enters Q or q$.$

Based on the user input, in the Main method, you will use a switch statement to call the following

three methods as appropriate:

A$)$ public static void RegisterStudent $($int$[]$ ids, string$[]$ names, ref int nStudents$)$:

This method will be called to enter a new student$$s ID number and name in the arrays: ids

and names. First, this method will check if the total number of students is less than the

maximum allowed $(10).$ If yes, the student$$s id and name will be taken as input and stored

in the arrays ids and names. The parameter nStudents will help you to keep track of the

current number of students and determine the array index to store the name and id of the

student. nStudents will be updated after successful registration of the student. Appropriate

messages should be shown for both successful and unsuccessful registration.

B$)$ public static void EnterGrade $($int$[]$ ids, int$[]$ nGrades, double$[,]$ grades$)$:

This method will take an id from the user, search the id by simply using a loop in the ids

array, and find the index of the input id in the array. If the student$$s id is found, the index

will be used to check the nGrades array to find out how many grades have been entered so

far for that particular student. If it is less than $5,$ a new grade will be taken as input and be

entered into the grades array. The row number will be the index of the student$$s id in the

ids array, and the column number will be determined by the value taken from the nGrades

array at that index. After successful entry, the value in the nGgrades array for that student

will be updated. Appropriate messages should be shown for student not found, no more

space for entering grades, and successful entry of the grade.

C$)$ public static void CalculateAverage $($int$[]$ ids, int$[]$ nGrades, string$[]$ names, double$[,]$

grades$)$:

This method will take an id from the user, search the id by simply using a loop in the ids

array, and find the index of the input id in the array. If the student$$s id is found, the index

will be used to check the nGrades array to find out how many grades have been entered so

far for that particular student. If there is at least one grade, the grades array will be accessed

to calculate the average. The calculated average will be printed along with the name and

the id of the student. Appropriate messages will be shown for student not found and no

grades in the record.

See below an example of the contents of the arrays after successful registration of $3$ students and

successful entries of some grades. The first, the second and the third student has so far $2,3,$ and $1$

grades, respectively.

ids names nGrades

$101$

$102$

$103$

$0$

$0$

$0$

$0$

$0$

$0$

$0$

grades

$88\mathrm{.}086\mathrm{.}5000$

$90\mathrm{.}576\mathrm{.}070\mathrm{.}000$

$85\mathrm{.}00000$

$00000$

$00000$

$00000$

$00000$

$00000$

$00000$

$00000$

$2$

$3$

$1$

$0$

$0$

$0$

$0$

$0$

Jane

Joe

David

Important: You should use the method headers as given above. Do NOT use any C# languagefeatures $($or data input methods$)$ that has not been taught in the class. Check the lecture slides

to verify this. Some concepts may exist in the textbook, but we did not learn those in the class.

You are NOT allowed to use these. Submissions that utilize any C# language$-$features beyond

the lecture slides will automatically receive $0$ in the assignment.