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23 October, 19:44

A variable like userNum can store a value like an integer. Extend the given program to print userNum values as indicated.

(1) Output the user's input. Enter integer: 4 You entered: 4

(2) Extend to output the input squared and cubed. Enter integer: 4 You entered: 4 4 squared is 16 And 4 cubed is 64!

(3) Extend to get a second user input into userNum2. Output sum and product. Enter integer: 4 You entered: 4 4 squared is 16 And 4 cubed is 64! Enter another integer: 5 4+5 is 9 4*5 is 20.

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  1. 23 October, 21:21
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    This program is written using Java programming language.

    No comments were used; however, see explanation section for line by line explanation

    import java. util.*;

    public class Nums {

    public static void main (String args[]) {

    Scanner input = new Scanner (System. in);

    System. out. println ("1.");

    int userNum;

    System. out. print ("Enter Integer: ");

    userNum = input. nextInt ();

    System. out. println ("You entered: "+userNum);

    System. out. println ("2.");

    System. out. print ("Enter Integer: ");

    userNum = input. nextInt ();

    System. out. println ("You entered: "+userNum);

    System. out. println (userNum+" squared is " + (userNum * userNum));

    System. out. println ("And "+userNum+" cubed is " + (userNum * userNum * userNum) + "!");

    System. out. println ("3.");

    System. out. print ("Enter Another integer: ");

    int userNum2 = input. nextInt ();

    System. out. println (userNum+" + "+userNum2+" is " + (userNum + userNum2));

    System. out. println (userNum+" * "+userNum2+" is " + (userNum * userNum2));

    }

    }

    Explanation:

    This enables the program accept inputs

    Scanner input = new Scanner (System. in);

    This signifies the beginning of number 1

    System. out. println ("1.");

    Variable userNum is declared as type integer

    int userNum;

    The line prompts the user for input

    System. out. print ("Enter Integer: ");

    The line accepts the input

    userNum = input. nextInt ();

    This line displays user input

    System. out. println ("You entered: "+userNum);

    This signifies the beginning of number 2

    System. out. println ("2.");

    This line prompts the user for input

    System. out. print ("Enter Integer: ");

    This line accepts input

    userNum = input. nextInt ();

    This line prints user input (as required in number 2)

    System. out. println ("You entered: "+userNum);

    This line calculates and prints the square of user input

    System. out. println (userNum+" squared is " + (userNum * userNum));

    This line calculates and prints the cube of user input

    System. out. println ("And "+userNum+" cubed is " + (userNum * userNum * userNum) + "!");

    This signifies the beginning of number 3

    System. out. println ("3.");

    This line prompts the user for another integer value

    System. out. print ("Enter Another integer: ");

    This line accepts the input from the user

    int userNum2 = input. nextInt ();

    This line adds the two inputs by the user and displays the result

    System. out. println (userNum+" + "+userNum2+" is " + (userNum + userNum2));

    This line multiplies the two inputs by the user and displays the result

    System. out. println (userNum+" * "+userNum2+" is " + (userNum * userNum2));
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