Question

E zyBook 21: 198: 102 home> 5.2: Arrays (int courseGrades(4), the second with a 2-element array (int courseGradesl2), See "How to Use zyBooks Also note: If the submitted code tries to access an invalid array element, such as courseGrades(9j for a 4-element array, the test may generate strange results. Or the test may crash and report "Program end never reached', in which case the system doesnt print the test case that caused the reported message. 1 Import java.util.Scanner; 3 public class CourseGradePrinter 4 public static void main (String [1 args) f final int NUM VALS 4; int[] courseGrades -new int[NUN VALS] int i courseGrades(1 7 courseGrades[1] 9 courseGrades[21 11 courseGrades(3] 10 10 12 13 14 Your solution goes here 16
Please do it in java thanks a lot

Answer 1

1) CourseGradePrinter.java

package test;

import java.util.Scanner;

public class CourseGradePrinter {

   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in); // scanner object for takinginput

       final int NUM_VALS = 4;
       int[] courseGrades = new int[NUM_VALS]; // creating int array of size 4
       int i;

       // intialising array
       courseGrades[0] = 7;
       courseGrades[1] = 9;
       courseGrades[2] = 11;
       courseGrades[3] = 10;

       // infinite loop
       while (true) {
           // taking input
           System.out.print("Enter index : ");
           i = sc.nextInt();
           if (i > NUM_VALS) {
               System.out.println("ERROR! invalid index..exiting");
               break;
           }
           System.out.println("Your marks : " + courseGrades[i]+"\n\n"); // priniting
                                                                   // marks
       }

   }

}