Assignment Objective

The objective of this assignment is to help students practice how to manage multiple student records using basic data structures.

In this assignment, students will create a simple Student Marks Management System that stores student details, calculates total marks, calculates average marks, assigns grades, searches records, updates marks, and displays reports.

Learning Outcomes

After completing this assignment, students will be able to:

Scenario

A small coaching institute wants a simple program to manage student marks. The institute does not want to use a database yet. They want a basic program that stores student records in memory using programming data structures.

Each student record should contain basic details such as roll number, name, marks in different subjects, total marks, average marks, and grade.

Data Structure Requirement

Use a list to store multiple students.

Each student should be represented using a map/dictionary.

students = [
    {
        "rollNumber": 101,
        "name": "Aman",
        "marks": {
            "programming": 85,
            "database": 78,
            "math": 90
        }
    },
    {
        "rollNumber": 102,
        "name": "Riya",
        "marks": {
            "programming": 92,
            "database": 88,
            "math": 95
        }
    }
]

The exact syntax can be changed based on the programming language, but the structure should remain similar.

Required Student Fields

Main Program Features

Your program should provide the following menu options:

========== Student Marks Management System ==========

1. Add New Student
2. Display All Students
3. Search Student by Roll Number
4. Update Student Marks
5. Delete Student Record
6. Calculate Class Average
7. Display Topper
8. Display Lowest Scoring Student
9. Sort Students by Average Marks
10. Exit

Task 1: Add New Student

Create a feature that allows the user to add a new student record.

Requirements

Suggested Pseudocode

FUNCTION addStudent()
    INPUT rollNumber
    CHECK if rollNumber already exists

    IF rollNumber exists THEN
        DISPLAY "Student already exists"
        RETURN
    END IF

    INPUT name
    INPUT programmingMarks
    INPUT databaseMarks
    INPUT mathMarks

    VALIDATE marks

    CREATE studentDictionary
    ADD studentDictionary TO studentsList

    DISPLAY "Student added successfully"
END FUNCTION

Task 2: Display All Students

Create a feature that displays all student records in a clean format.

Requirements

Sample Output

Roll No: 101
Name: Aman
Programming: 85
Database: 78
Math: 90
Total: 253
Average: 84.33
Grade: A
--------------------------------

Task 3: Search Student by Roll Number

Create a feature that searches for a student using roll number.

Requirements

Suggested Pseudocode

FUNCTION searchStudent(rollNumber)
    FOR EACH student IN studentsList
        IF student["rollNumber"] == rollNumber THEN
            DISPLAY student details
            RETURN student
        END IF
    END FOR

    DISPLAY "Student not found"
    RETURN null
END FUNCTION

Task 4: Update Student Marks

Create a feature that updates marks of an existing student.

Requirements

Suggested Pseudocode

FUNCTION updateMarks()
    INPUT rollNumber
    student = searchStudent(rollNumber)

    IF student is null THEN
        DISPLAY "Cannot update. Student not found."
        RETURN
    END IF

    INPUT newProgrammingMarks
    INPUT newDatabaseMarks
    INPUT newMathMarks

    VALIDATE marks

    UPDATE student marks
    RECALCULATE total, average, grade

    DISPLAY "Marks updated successfully"
END FUNCTION

Task 5: Delete Student Record

Create a feature that removes a student record using roll number.

Requirements

Task 6: Calculate Total, Average, and Grade

Create helper functions to calculate total marks, average marks, and grade.

Total Formula

total = programmingMarks + databaseMarks + mathMarks

Average Formula

average = total / numberOfSubjects

Grade Rules

Suggested Grade Function

FUNCTION calculateGrade(average)
    IF average >= 90 THEN
        RETURN "A+"
    ELSE IF average >= 80 THEN
        RETURN "A"
    ELSE IF average >= 70 THEN
        RETURN "B"
    ELSE IF average >= 60 THEN
        RETURN "C"
    ELSE IF average >= 50 THEN
        RETURN "D"
    ELSE
        RETURN "F"
    END IF
END FUNCTION

Task 7: Calculate Class Average

Create a feature that calculates the average marks of the entire class.

Requirements

classAverage = sumOfAllStudentAverages / totalStudents

Task 8: Display Topper

Create a feature that finds the student with the highest average marks.

Suggested Logic

SET topper = first student

FOR EACH student IN studentsList
    IF student average > topper average THEN
        SET topper = student
    END IF
END FOR

DISPLAY topper details

Task 9: Display Lowest Scoring Student

Create a feature that finds the student with the lowest average marks.

Suggested Logic

SET lowestStudent = first student

FOR EACH student IN studentsList
    IF student average < lowestStudent average THEN
        SET lowestStudent = student
    END IF
END FOR

DISPLAY lowestStudent details

Task 10: Sort Students by Average Marks

Create a feature that displays students from highest average marks to lowest average marks.

Requirements

Sample Rank Output

Rank  Roll No  Name    Average  Grade
1     102      Riya    91.67    A+
2     101      Aman    84.33    A
3     103      Sohan   72.00    B

Input Validation Rules

Your program should handle invalid input carefully.

Sample Initial Data

You may start your program with the following sample records:

students = [
    {
        "rollNumber": 101,
        "name": "Aman",
        "marks": {
            "programming": 85,
            "database": 78,
            "math": 90
        }
    },
    {
        "rollNumber": 102,
        "name": "Riya",
        "marks": {
            "programming": 92,
            "database": 88,
            "math": 95
        }
    },
    {
        "rollNumber": 103,
        "name": "Sohan",
        "marks": {
            "programming": 70,
            "database": 75,
            "math": 71
        }
    }
]

Functional Requirements Checklist

Suggested Program Structure

Students should divide the program into small functions instead of writing everything in one place.

FUNCTION addStudent()
FUNCTION displayAllStudents()
FUNCTION searchStudent(rollNumber)
FUNCTION updateStudentMarks()
FUNCTION deleteStudent()
FUNCTION calculateTotal(marks)
FUNCTION calculateAverage(total, subjectCount)
FUNCTION calculateGrade(average)
FUNCTION displayClassAverage()
FUNCTION displayTopper()
FUNCTION displayLowestScoringStudent()
FUNCTION sortStudentsByAverage()
FUNCTION showMenu()

Sample Program Flow

========== Student Marks Management System ==========

1. Add New Student
2. Display All Students
3. Search Student by Roll Number
4. Update Student Marks
5. Delete Student Record
6. Calculate Class Average
7. Display Topper
8. Display Lowest Scoring Student
9. Sort Students by Average Marks
10. Exit

Enter your choice: 1

Enter Roll Number: 104
Enter Name: Meera
Enter Programming Marks: 88
Enter Database Marks: 91
Enter Math Marks: 84

Student added successfully.

Test Cases

Test your program using the following cases.

Bonus Challenges

Students who complete the basic assignment can try the following advanced challenges.

Expected Deliverables

Students should submit the following:

Evaluation Rubric

Common Mistakes to Avoid

Final Submission Checklist

Reflection Questions

Students should answer the following questions after completing the assignment.

Quick Summary