Question

Write a java program that specifies three parallel one dimensional arrays name length, width, and area. Each array should be capable of holding a number elements provided by user input. Using a for loop input values for length and width arrays. The entries in the area arrays should be the corresponding values in the length and width arrays (thus, area[i] =   length [i]* width [i]) after data has been entered display the following output: (in Java)

Answer 1

Here is the answer for your question in Java Programming Language.

NOTE : Unfortunately your sample output was not loaded if you provided. I have given possible sample outputs in the code. Please check them and uncomment the respected code to use the code. Thank you.

Comment below if you need any further help.

CODE :

import java.text.DecimalFormat; import java.util.Scanner; public class calculateAreas { public static void main(String[] args){ //Required variables and objects int n; DecimalFormat f = new DecimalFormat("#.##"); Scanner s = new Scanner(System.in); //Reading number of elements in array System.out.print("Enter number of elements you want to enter in the arrays : "); n = s.nextInt(); //Creating three parallel arrays to be able to hold numbre of elements entered by user double[] length = new double[n]; double[] width = new double[n]; double[] area = new double[n]; //Reading lengths and widths and calculating areas System.out.println("------------------------------------------------"); for(int i=0;i<n;i++){ System.out.print("\nEnter length #" + (i+1) + " : "); length[i] = s.nextDouble(); System.out.print("Enter width #" + (i+1) + " : "); width[i] = s.nextDouble(); //Calculating area area[i] = length[i]*width[i]; } System.out.println("------------------------------------------------"); //Displaying output //Sample Output - 1 System.out.println("\n----------------------------------------------------------"); System.out.println("Length\tWidth\tArea(sq.m)"); System.out.println("----------------------------------------------------------"); for(int i=0;i<n;i++){ System.out.println(String.format("%-20.2f%-20.2f%.2f",length[i],width[i],area[i])); } //Sample Output - 2 /* System.out.println("----------------------------------------------------------"); for(int i=0;i<n;i++){ System.out.println("For length = " + length[i] + " m and width = " + width[i] + " m the area is " +f.format(area[i]) + " sq.m"); } System.out.println("----------------------------------------------------------"); */ //Sample Output - 3 /* System.out.println("==========================================================="); for(int i=0;i<n;i++){ System.out.println("Length = " + length[i] + " m\nWidth = " + width[i] + " m\nArea = " + f.format(area[i]) + " sq.m"); System.out.println("------------------------------"); } System.out.println("==========================================================="); */ } }

SCREENSHOTS :

Please see the screenshots of the code below for indentations of the code.

1 „ import java.text.DecimalFormat; import java.util.Scanner; 2 3 4 5 public class calculateAreas { 6 public static void main(String[] args) { 로 7 8 9 10 11 //Required variables and objects int n; DecimalFormat f = new DecimalFormat("#.##"); Scanner s = new Scanner (System.in); //Reading number of elements in array System.out.print("Enter number of elements you want to enter in the arrays n = s.nextInt(); 12 13 14 15 16 17 //Creating three parallel arrays to be able to hold numbre of elements entered by user double[] length = new double[n]; double[] width = new double[n];|| double[] area = new double[n]; 18 19 20 -"); 21 22 23 24 25 26 27 //Reading lengths and widths and calculating areas System.out.println("- for(int i=0;i<n;i++) { System.out.print("\nEnter length #" + (i+1) + " : "); length[i] = s.nextDouble(); System.out.print("Enter width #" + (i+1) + " : "); width[i] = s.nextDouble(); //Calculating area area[i] = length[i] *width[i]; 28 29 30 }

31 32 33 34 35 36 37 38 39 System.out.println(". -"); //Displaying output // Sample Output - 1 System.out.println("\n-- -"); System.out.println("Length\tWidth\tArea (sq.m)"); System.out.println("- -"); for(int i=0;i<n;i++) { System.out.println(String.format("}-20.218-20.21%.2f", length[i],width[i], area[i])); } 40 41 42 43 // Sample Output - 2 System.out.println("- for (int i=0;i<n;i++) { System.out.println("For length = " + length[i] + " m and width = " + width[i] + " m the area is " +f.format (area[i]) + " sq.m"); } System.out.println("- ----"); 44 45 46 47 48 49 50 51 S //Sample Output - 3 "); 52 53 54 System.out.println("=== for (int i=0;i<n;i++) { System.out.println("Length = " + length[i] + " m\nWidth System.out.println("- " + width[i] + " m\nArea = f. format (area[i]) + " sq.m"); 55 56 } System.out.println("==== 57 58 59 60 }

OUTPUT :

Sample output - 1 :

run: Enter number of elements you want to enter in the arrays : 5 Enter length #1 : 13.5 Enter width #1: 1.3 Enter length #2 : 14.6 Enter width #2:9.7 Enter length #3 : 16.8 Enter width #3 : 3.6 Enter length #4 : 15.5 Enter width #4 : 9.8 Enter length #5: 19.9 Enter width #5: 5.8 Length Width Area(sq.m) 13.50 1.30 17.55 14.60 9.70 141.62 16.80 3.60 60.48 15.50 9.80 151.90 19.90 5.80 115.42 BUILD SUCCESSFUL (total time: 35 seconds)

Sample output- 2 :

run Enter number of elements you want to enter in the arrays : 5 Enter length #1 : 15.6 Enter width #1 : 3.4 Enter length #2 : 78.9 Enter width #2: 9.9 Enter length #3 : 45.5 Enter width #3: 3.2 Enter length #4:56.6 Enter width #4:5.5 Enter length #5 : 14.5 Enter width #5:23 For length = 15.6 m and width = 3.4 m the area is 53.04 sq.m For length = 78.9 m and width = 9.9 m the area is 781.11 sq.m For length = 45.5 m and width = 3.2 m the area is 145.6 sq.m For length = 56.6 m and width = 5.5 m the area is 311.3 sq.m For length = 14.5 m and width = 2.3 m the area is 33.35 sq.m BUILD SUCCESSFUL (total time: 21 seconds)

Sample output - 3 :

run: Enter number of elements you want to enter in the arrays : 5 Enter length #1 : 45.6 Enter width #1:5.6 Enter length #2 : 15.6 Enter width #2: 5.5 Enter length #3: 19.8 Enter width #3: 4.5 . Enter length #4 : 78.6 Enter width #4:34.6 Enter length #5:45 Enter width #5:20 Length = 45.6 m Width = 5.6 m Area = 255.36 sq.m

Length = 15.6 m Width = 5.5 m Area = 85.8 sq.m Length = 19.8 m Width = 4.5 m Area = 89.1 sq.m Length = 78.6 m Width = 34.6 m Area = 2719.56 sq.m Length = 45.0 m Width = 20.0 m Area = 900 sq.m BUILD SUCCESSFUL (total time: 26 seconds)

Any doubts regarding this can be explained with pleasure :)