Write a program called GradesAverage, which prompts user for the number of stude

Question

Write a program called GradesAverage, which prompts user for the number of students, reads it from the keyboard, and saves it in an int variable called numStudents. It then prompts user for the grades of each of the students and saves them in an int array called grades.

Your program must:
1. Make sure you store the grades entered in an array.
2. Compute the average in a separate method from the main().
3. Check the numStudents is a number, otherwise continue to prompt until they do.
4. Check the grade is between 0 and 100, otherwise continue to prompt until they do.
5. Have the user's entry from the console stay on the same line. (see example below)

Explanation / Answer

Here is the solution with commnets..plzz rate

import java.util.Scanner;

public class chegg {

   public static void main(String[] args)throws Exception {
       // TODO Auto-generated method stub
       String numStr ="";
       int num=0;
       Scanner sc = new Scanner(System.in);
       //taking the user input
       while (true) {
           System.out.println("PLease enter the number of students");
           //error handling the code if aynything other is entered
           try{
               numStr = sc.next();
               num=Integer.parseInt(numStr);
           }catch(Exception e){
               continue;
           }
           if (num > 0) {
               break;
           }
       }
       int stud_marks[] = new int[num];
       System.out.println("Enter the students marks now");
       int i = 0;
       //taking the grades as input
       while (true) {
           int enter = sc.nextInt();
           if (stud_marks[i] > 100 && stud_marks[i] < 0)
               continue;
           else {
               if (i == stud_marks.length) {
                   break;
               }
               stud_marks[i] = sc.nextInt();
               i += 1;
           }
       }
       // computing the average
       computeAverage(stud_marks);
   }
   //average computing function
   public static void computeAverage(int[] marks) {
       int total = 0;
       for (int i = 0; i < marks.length; i++) {
           total += marks[i];
       }
       double average = total / marks.length;
       System.out.println("Average:" + average);
   }
}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.