Question

Number of Numbers (10 pts)

• For this assignment you will be working with arrays.
• Open a new Java project called Nums
• Prompt a user to enter in the length of the array (the number of numbers).

Enter the number of numbers:

• Use this information to declare an array of the user-specified length.
• Next, using a for loop, prompt the user to enter that many numbers, and store each one in your array until your array is at full capacity.
• Using the same, or a second, for loop, sum the numbers and report their sum to the user.
• Also, multiply the numbers together and report their product to the user.
• The sum and the product should be printed to one decimal value only.
• Your program should work identically to the sample output below:

Enter the number of numbers: 4
Enter 4 numbers:

Number 1: 3.2
Number 2: 6.7
Number 3: 2.9
Number 4: 4.6

The sum of the numbers is: 17.4
And the product is: 286.0

• Another run of the program might give the following output:

Enter the number of numbers: 8
Enter 8 numbers:

Number 1: 2.1
Number 2: -5.6
Number 3: 9.0
Number 4: 8.7
Number 5: -2.2
Number 6: 8.2
Number 7: 9.5
Number 8: 1.4

The sum of the numbers is: 31.1
And the product is: 220931.3

• Upload Nums.java to Canvas when you are finished.

**Please don't use format to do this one.

Answer 1

import java.util.Scanner;
import java.lang.Math;

public class Nums {

    public static void main(String[] args) {

        /* creating the scanner object */
        Scanner s = new Scanner(System.in);

        System.out.print("Enter the number of numbers: ");

        /* scanning the length of array */
        int n = s.nextInt();

        /* declaring the integer array with the size n */
        double arr[] = new double[n];

        /* initializing the variables to store sum and product of elements of array */
        double sum = 0;
        double product = 1;

        System.out.println("Enter " + n + " numbers:\n");

        /* scanning the user input for array */
        for (int i = 0; i < n; i++) {

            /* scanning the array elements */
            System.out.print("Number " + (i + 1) + " : ");
            arr[i] = s.nextFloat();

            /* calculating the sum and product of elements */
            sum = sum + arr[i];
            product = product * arr[i];
        }

        /* rounding the results to one decimal place */
        sum = Math.round((sum) * 10.0) / 10.0;
        product = Math.round((product) * 10.0) / 10.0;

        /* displaying the result */
        System.out.println();
        System.out.println("The sum of the numbers is: " + sum);
        System.out.println("And the product is: " + product);
    }
}

import java.util.Scanner; import java.lang.Math; 2 public class Nums 4 public static void main (String [] args) { /creating the scanner object */ new Scanner (System.in) ; Scanner s 10 System.out.print ("Enter the number of numbers: ") ; 11 12 /* scanning the length of array */ int n = s.nextInt (); 13 14 15 / declaring the integer array with the size n */ 16 double arr [] =new double [n] ; 17 18 initializing the variables to store sum and product of elements of array/ 19 double sum =0; 20 21 double product = 1; 22 System.out.println ("Enter " + n + numbers:\n") ; 23 24 / scanning the user input for array */ 25 for (int i = 0; i <n; i++) [ 26 27 / scanning the array elements */ 28 System.out.print ("Number " + (i + 1) + " : ") ; 29 arr [i] = s.nextFloat (); 30 31 co

calculating the sum and product of elements */ 32 sum = sum + arr [i]; 33 product = product arr[i]: 34 35 36 / rounding the results to one decimal place * 37 10.0) / 10.0; sum = Math.round((sum) 38 = Math.round ( (product) product * 10.0) 10.0; 39 40 displaying the result */ System.out.println () ; 41 42 System.out.println ("The sum of the numbers is: " sum) 43 " product); System.out.println ( "And the product is: 44 1 45 } 46

o/p:

\jdk-10.0.1\bin\ java" "-java agent : C: \ Program Files JetBrains\ IntelliJ IDEA Community Edition 2018.111ib idea rt.jar-59988:C: \Program Files JetBrains \ Intelli he aiimber of nmibers Enter 4 numbers: Number 1: 3.2 Number 2 6.7 Number 3 2.9 Number 4: 4. The sun of the numbers is: 17.4 And the product is: 286.0 Process finished with exit code 0

For help please comment.