Question

In Java in main do the following:

1. Create four double variables. Give them any name you feel is appropriate.
2. Output a prompt that asks for the input of four doubles values.
3. Fill the variables you created with values from the keyboard

Once you have completed the above output the following:

1. The square of each number
2. The sum of the squares
3. The average of the squares

Answer 1

Program :

import java.util.*;
public class Main
{
   public static void main(String[] args) {
   Scanner s = new Scanner(System.in);
   double n1,n2,n3,n4,s1,s2,s3,s4,sum;
   System.out.print("Enter first value:");
   n1=s.nextInt();
   System.out.print("Enter second value:");
   n2=s.nextInt();
   System.out.print("Enter third value:");
   n3=s.nextInt();
   System.out.print("Enter fourth value:");
   n4=s.nextInt();
   s1=n1*n1;
   s2=n2*n2;
   s3=n3*n3;
   s4=n4*n4;
   sum=s1+s2+s3+s4;
   System.out.println("\nThe square of the "+n1+" is "+ s1);
   System.out.println("The square of the "+n2+" is "+ s2);
   System.out.println("The square of the "+n3+" is "+ s3);
   System.out.println("The square of the "+n4+" is "+ s4);
   System.out.println("\nThe sum of the squares :"+ sum);
   System.out.println("\nThe average of the squares :"+sum/4);
}

}

Screenshot of the program:

Output: