Question

7. In an entrance examination, students have answered English, Maths and Science papers. Write a program to calculate and display average marks obtained by all the students. Take number of students appeared and marks obtained in all the three subjects by each student along with the name as inputs. ​

Answer 1

Answer:

import java.util.Scanner;

public class KboatStudentMarks

{

public void studentMarks() {

Scanner in = new Scanner(System.in);

System.out.print("Enter number of students: ");

int studentCount = in.nextInt();

String names[] = new String[studentCount];

int engMarks[] = new int[studentCount];

int sciMarks[] = new int[studentCount];

int mathsMarks[] = new int[studentCount];

double avgMarks[] = new double[studentCount];

double totalMarks = 0.0;

for (int i = 0; i < studentCount; i++) {

System.out.println("Enter details of student " + (i + 1));

System.out.print("Name: ");

in.nextLine();

names[i] = in.nextLine();

System.out.print("Marks in English: ");

engMarks[i] = in.nextInt();

System.out.print("Marks in Science: ");

sciMarks[i] = in.nextInt();

System.out.print("Marks in Maths: ");

mathsMarks[i] = in.nextInt();

avgMarks[i] = (engMarks[i] + sciMarks[i] + mathsMarks[i]) / 3.0;

totalMarks += avgMarks[i];

}

System.out.println();

for (int i = 0; i < studentCount; i++) {

System.out.println("Details of student " + (i + 1));

System.out.println("Name: " + names[i]);

System.out.println("English: " + engMarks[i]);

System.out.println("Science: " + sciMarks[i]);

System.out.println("Maths: " + mathsMarks[i]);

System.out.println("Average: " + avgMarks[i]);

}

double classAvg = totalMarks / studentCount;

System.out.println("\nAverage of