Suppose someone tries to store into a single integer a student number and a stud

Question

  Suppose someone tries to store into a single integer a student number and a student percentage score for a certain exam. For example, the integer 10085 might be used to store the fact that student number 100 received the value 85 on a certain exam. For example, the integer 876597 might be used to store the fact that student number 8765 received the value 97 on a certain exam. Assuming no one scored more than 99 on a certain exam and assuming you will receive data with atleast three digits or more so the student number and percentage score always both exist, write code that reads in a single integer value and then breaks this packed integer into its two fields, the student number and the student percentage score.

Explanation / Answer

StudentNOPercentage.java

import java.util.Scanner;

public class StudentNOPercentage {
   public static void main(String[] args) {
      
       //Declaring variables
       int number,student_no,marks,count=0,num;
      
       //Scanner object is used to get the inputs entered by the user
               Scanner sc=new Scanner(System.in);
              
               /* This loop continues to execute until
               * the user enters valid number
               */
               while(true)
               {
                   //Getting the number entered by the user
                   System.out.print("Enter the number :");
                   number=sc.nextInt();
                   num=number;
                  
                   /* This loop will check whether the
                   * user entered number is having atleast 3 digits
                   */
                   while(num>0)
                   {
                       num=num/10;
                       count++;
                   }
                   if(count>=3)
                   {
                       break;
                   }
                   else
                   {
                       //If user entered number is less than 3 digits the display error message
                       System.out.println("Invalid.Must be atleast 3 Digits ** ");
                       continue;
                   }  
               }
              
                  
              
               //getting the student number
               student_no=number/100;
              
               //Getting the marks
               marks=number%100;
              
               //Displaying the student number
               System.out.println("Student Number:"+student_no);
              
               //Displaying the marks
               System.out.println("Marks:"+marks);

   }
  
}

__________________

Output:

Enter the number :95
Invalid.Must be atleast 3 Digits **

Enter the number :10085
Student Number:100
Marks:85

____________Thank You

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