StudentGradingSystem.java

import java.util.Scanner;

class Student {
    String name;
    int rollNo;
    int[] marks = new int[5];
    int total = 0;
    double average;
    char grade;

    void inputDetails(Scanner sc) {
        System.out.print("Enter student name: ");
        name = sc.nextLine();

        System.out.print("Enter roll number: ");
        rollNo = sc.nextInt();

        System.out.println("Enter marks for 5 subjects (out of 100):");
        for (int i = 0; i < 5; i++) {
            System.out.print("Subject " + (i + 1) + ": ");
            marks[i] = sc.nextInt();
            total += marks[i];
        }

        average = total / 5.0;
        assignGrade();
    }

    void assignGrade() {
        if (average >= 90) {
            grade = 'A';
        } else if (average >= 80) {
            grade = 'B';
        } else if (average >= 70) {
            grade = 'C';
        } else if (average >= 60) {
            grade = 'D';
        } else if (average >= 40) {
            grade = 'E';
        } else {
            grade = 'F'; // Fail
        }
    }

    void printReport() {
        System.out.println("\n----- Student Grade Report -----");
        System.out.println("Name       : " + name);
        System.out.println("Roll No.   : " + rollNo);
        System.out.println("Total Marks: " + total + "/500");
        System.out.printf("Average    : %.2f%%\n", average);
        System.out.println("Grade      : " + grade);
    }
}

public class StudentGradingSystem {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        Student student = new Student();
        student.inputDetails(sc);
        student.printReport();

        sc.close();
    }
}