Junaid Mahmud

it gives an error that says add cast to int. the problem that im having is that output does not show decimals. for an example look at the last set of numbers why is it only $2.0? why not not the decimal??


ANSWERS
Enter the price for each item: 1.12
Enter the price for each item: 2.36
Enter the price for each item: 3.25
Enter the price for each item: 4.25
Enter the price for each item: 7.36
Enter the price for each item: 9.99
Enter the price for each item: 8.49
Enter the price for each item: 1.35
Enter the price for each item: 1.26
Enter the price for each item: 3.45

Enter the amount for each item: 2
Enter the amount for each item: 3
Enter the amount for each item: 4
Enter the amount for each item: 1
Enter the amount for each item: 5
Enter the amount for each item: 6
Enter the amount for each item: 8
Enter the amount for each item: 3
Enter the amount for each item: 4
Enter the amount for each item: 5

The total for each item is: $2.0
The total for each item is: $6.0
The total for each item is: $12.0
The total for each item is: $4.0
The total for each item is: $35.0
The total for each item is: $54.0
The total for each item is: $64.0
The total for each item is: $3.0
The total for each item is: $4.0
The total for each item is: $15.0
*/

The output for some reason is not resulting in a double? If i remove the int it gives an error.


package Csc201; import java.io.*; public class arrayProgram { /* * Junaid Mahmud * arrayProgram * Date written 04/19/17 * Modified 04/21/17 * The purpose of the program is to allow the user to enter the price of 10 items and the amount of each and will output the total cost. * FORMULAS USED: N/A     * Computer Science 201 * Professor Anwari                               */ public static void main(String[] args) throws java.io.IOException { // Initialize Variable double price []; price = new double [10]; double i; // Loop will allow the user to enter the price of 10 items for (i=0; i<10;i++) { System.out.print("Enter the price for each item: "); InputStreamReader isr = new InputStreamReader (System.in); BufferedReader br = new BufferedReader (isr); String s1= br.readLine(); price[(int) i] = (int) Double.parseDouble(s1); } // Initialize Variable double amount []; amount = new double [10]; double k; // Loop will allow the user to enter the amount of each item for(k=0;k<10;k++) { System.out.print("Enter the amount for each item: "); InputStreamReader isr = new InputStreamReader (System.in); BufferedReader br = new BufferedReader (isr); String s2= br.readLine(); amount[(int) k] = Double.parseDouble(s2); } // Initialize Variable double total []; total = new double [10]; double l = 0; // Loop will outprint the total cost of each item based on price and amount for(l=0;l<10;l++) { total[(int) l] = price[(int) l] * amount[(int) l]; System.out.println("The total for each item is: " + "$" + total[(int) l]); } } }

I dont understand what you are trying to say

I am supposed to output the total (price * amount) for some reason it does not output. I tried using a for loop and that didnt work either

package Csc201; import java.io.*; public class arrayProgram { public static void main(String[] args) throws java.io.IOException { int price []; price = new int [10]; int i; for (i=0; i<10;i++) { System.out.print("Enter the price for each item: "); InputStreamReader isr = new InputStreamReader (System.in); BufferedReader br = new BufferedReader (isr); String s1= br.readLine(); price[i] = Integer.parseInt(s1); } int amount []; amount = new int [10]; int k; for(k=0;k<10;k++) { System.out.print("Enter the amount for each item: "); InputStreamReader isr = new InputStreamReader (System.in); BufferedReader br = new BufferedReader (isr); String s2= br.readLine(); amount[k] = Integer.parseInt(s2); } int total []; total = new int [10]; int l = 0; total[l] = price[i] * amount[k]; System.out.println("The total for each item is: " + total); } }

please help I am having serious trouble.

package Csc201; import java.util.Scanner; public class exam2 { public static void main(String[] args) { double firstTotal = 0; double secondTotal = 0; double thirdTotal = 0; double millionaire = 1000000; double days = 0; double months; double years; long total = 0; months = days * 30; years = months * 12; Scanner input = new Scanner(System.in); for (double initial = 0; initial <= firstTotal; initial++) { System.out.print("Enter hourly wage: "); initial = input.nextDouble(); double firstOutcome = initial * 40; firstOutcome = firstOutcome * 4; System.out.println(firstOutcome); for (double fourthweek = 0; fourthweek <= secondTotal; fourthweek++) { System.out.print("Enter wage per day on the fourth week: "); fourthweek = input.nextDouble(); double secondOutcome = fourthweek * 4; System.out.println(secondOutcome); double secondmonth = 0; while (secondmonth < millionaire) { double thirdOutcome = initial * 0.02; thirdOutcome = thirdOutcome * 2; // Every week thirdOutcome++; while (total <= 1000000) { days++; System.out.println(days); } } } } } }

okay so for the first for loop the average pay is 7.50 per hour (40 hours a week) the second loop has the pay only to $32 a day for 4 weeks. the third loop has the initial pay increased by 0.2 % and its supposed to be doubled every two weeks.

Hey! I have a question on how to use time in java such as calculate the days months and years for a program. I have to find the time it takes for someone to become a millionaire. Thats really the only problem i am having


package Csc201; import java.util.Scanner; public class exam2 { public static void main(String[] args) { double firstTotal = 0; double secondTotal = 0; double thirdTotal = 0; double millionaire = 1000000; Scanner input = new Scanner(System.in); for (double initial = 0; initial <= firstTotal; initial++) { System.out.print("Enter hourly wage: "); initial = input.nextDouble(); double firstOutcome = initial * 40; firstOutcome = firstOutcome * 4; System.out.println(firstOutcome); for (double fourthweek = 0; fourthweek <= secondTotal; fourthweek++) { System.out.print("Enter wage per day on the fourth week: "); fourthweek = input.nextDouble(); double secondOutcome = fourthweek * 4; System.out.println(secondOutcome); double secondmonth = 0; while (secondmonth < millionaire) { double thirdOutcome = initial * 0.02; thirdOutcome = thirdOutcome * 2; // Every week } } } } }

I am in the processes of constructing a hangman game in java where one player types in the word and the other has to guess letters. The current problem I am facing with is when I type in a character, it outputs the list of characters in the array. I am trying where it only prints out one character depending on the user. Thanks

package Csc201; import java.io.*; public class hangman { public static void main(String[] args) throws java.io.IOException { String inputString; // Set up the basic input stream InputStreamReader isr = new InputStreamReader (System.in); //Needed to use ReadLine BufferedReader br = new BufferedReader (isr); System.out.print("Enter word: "); inputString = br.readLine(); char[] charArray = { 'a', 'b', 'c', 'd', 'e', 'f', 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; System.out.print(charArray); } }

I have figured it out. Thanks for all the help though!

Oh sorry that is the outdated code. The new code is below and the problems I am having is that I need help on calculating the wall space and floor space. The reason is because it is calculated based on the amount of doors, windows, and bookshelves that user inputs and their measurements. That is the only thing I have issues on. My professor said I have everything else correct. I hope this makes sense. Thanks!

This is the code I need help on. This code below is from number of doors, windows, and bookshelves that I knew, but know has to be changed where I don't know the number of each and their measurements.

ld - length door

hd - height door

lw - length window

hw - height window

lb - length bookshelf

hb - height bookshelf

wb - width bookshelf

double wallspace = (2 * (length * height) + 2 * (width * height) - (ld * hd) - (lw * hw) - (lw * hw) - (lb * hb) );                double floorspace = ((length * width) - (lb * wb));


This is the full code. Thanks
package Hw; import java.util.Scanner; public class HouseReno3   { public static void main(String[] args) { // Initialize and Declare Variables double ceramictile = 4.00; double hardwood = 3.00; double carpet = 2.00; double linoleumtile = 1.00; // Initialize Variables int floortype; int budget; double length = 0; double height = 0; double width = 0; double ld = 0; double hd = 0; double lw = 0; double hw = 0; double lb = 0; double hb = 0; double wb = 0; double door = 0; double window = 0; double bookshelf = 0; double doorspace = 0; double windowspace = 0; double bookspacew = 0; double bookspacef = 0; // double costp; // double costf; doorspace = itemd (door, ld, hd, doorspace); windowspace = itemw (window, lw, hw, windowspace); bookspacew = itembw (bookshelf, lb, hb, bookspacew); bookspacef = itembf (bookshelf, lb, wb, bookspacef); // Initialize Scanner Scanner keyboard = new Scanner (System.in); System.out.println("What is the length of the room (in feet)? ");        length = keyboard.nextDouble();        System.out.println("What is the width of the room (in feet)? ");        width = keyboard.nextDouble();        System.out.println("What is the height of the room (in feet)? ");        height = keyboard.nextDouble();         System.out.println("Enter Number Of Doors"); door = keyboard.nextDouble(); for(int doors = 0; doors < door; doors++) {        System.out.println("What is the length of the door (in feet)? ");        ld = keyboard.nextDouble();        System.out.println("What is the height of the door (in feet)? ");        hd = keyboard.nextDouble();        System.out.println("Door space is: " + itemd(door, ld, hd, doorspace)); } System.out.println("Enter Number Of Windows"); window = keyboard.nextDouble(); for(int windows = 0; windows < window; windows++) { System.out.println("What is the length of the window (in feet)? ");        lw = keyboard.nextDouble();        System.out.println("What is the height of the window (in feet)? ");        hw = keyboard.nextDouble();        System.out.println("Window space is: " + itemw(window, lw, hw, windowspace)); } System.out.println("Enter Number Of Bookshelves"); bookshelf = keyboard.nextDouble(); for(int bookshelves = 0; bookshelves < bookshelf; bookshelves++) { System.out.println("What is the length of the bookcase (in feet)? ");     lb = keyboard.nextDouble();     System.out.println("What is the height of the bookcase (in feet)? ");     hb = keyboard.nextDouble();     System.out.println("What is the width of the bookcase (in feet)? ");     wb = keyboard.nextDouble();     System.out.println("The wall space for the bookshelf is: " + itembw(bookshelf, lb, hb, bookspacef));     System.out.println("The floor space for the bookshelf is: " + itembf(bookshelf, lb, wb, bookspacef)); } System.out.println("What is the preferred option? Ceramic Tile - 1, Hardwood - 2, Carpet - 3 and Linoleum Tile - 4");        floortype = keyboard.nextInt();        System.out.println("Enter Budget");        budget = keyboard.nextInt();                        double wallspace = (2 * (length * height) + 2 * (width * height) - (ld * hd) - (lw * hw) - (lw * hw) - (lb * hb) );                double floorspace = ((length * width) - (lb * wb));                                        if (floortype == 1 && floortype == 1 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget is Ceramic Tile: " + "$" + floorspace * ceramictile);        }                  if (floortype == 2 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget in Hardwood:" + "$" + floorspace * hardwood);        }                   if (floortype == 3 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget is Carpet: " + "$" + floorspace * carpet);        }                  if (floortype == 4 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring tybe based on budget is Linoleum tile: " + "$" + floorspace * linoleumtile );        }          if(floortype == 0){              if(budget > ceramictile * floorspace){                System.out.println(" The available flooring type based on budget is Ceramic Tile: " + "$" + floorspace * ceramictile);              }             if (budget > hardwood * floorspace){                System.out.println(" The available flooring type based on budget is Hardwood: " + "$" + floorspace * hardwood);             }             if (budget > carpet * floorspace){             System.out.println(" The avaiablabe flooring type based on budget is Carpet: " + "$" + floorspace *  carpet);             }             if (budget > linoleumtile * floorspace){             System.out.println(" The avaiable flooring type based on budget is Linoleum Tile: " + "$" + floorspace * linoleumtile);             }          }                        System.out.println(" The total wall space is: " + wallspace); // Prints out the total wall space                System.out.println(" The total floor space is: " + floorspace); // Prints out the total floor space                             // System.out.println(" The cost for paintng is: " + costp * wallspace );             // System.out.println(" The cost for flooring is: " + costf * floorspace);        // The code closes the keyboard input        keyboard.close();                                         } private static double itembf(double bookshelf, double lb, double wb, double bookspacef) { bookspacef = lb * wb; return (int) bookspacef; } private static double itembw(double bookshelf, double lb, double hb, double bookspacew) { bookspacew = lb * hb; return (int) bookspacew; } private static double itemw(double window, double lw, double hw, double windowspace) { windowspace = lw * hw; return (int) windowspace; } private static int itemd(double door, double ld, double hd, double doorspace) { doorspace = ld * hd; return (int) doorspace; } }

I am a little confused

How would I calculate the doorspace and wall space because it depends on the number of doors and windows the user enters as well as the bookshelves. Thanks!

double wallspace = (2 * (length * height) + 2 * (width * height) - (ld * hd) - (lb * hb) );                double floorspace = ((length * width) - (lb * wb));

package Hw; import java.util.Scanner; public class HouseReno3   { public static void main(String[] args) { // Initialize and Declare Variables double ceramictile = 4.00; double hardwood = 3.00; double carpet = 2.00; double linoleumtile = 1.00; // Initialize Variables int floortype; int budget; double length = 0; double height = 0; double width = 0; double ld = 0; double hd = 0; double lw = 0; double hw = 0; double lb = 0; double hb = 0; double wb = 0; double door = 0; double window = 0; double bookshelf = 0; double doorspace = 0; double windowspace = 0; double bookspacew = 0; double bookspacef = 0; // double costp; // double costf; doorspace = itemd (door, ld, hd, doorspace); windowspace = itemw (window, lw, hw, windowspace); bookspacew = itembw (bookshelf, lb, hb, bookspacew); bookspacef = itembf (bookshelf, lb, wb, bookspacef); // Initialize Scanner Scanner keyboard = new Scanner (System.in); System.out.println("Enter Number Of Doors"); door = keyboard.nextDouble(); for(int doors = 0; doors < door; doors++) {        System.out.println("What is the length of the door (in feet)? ");        ld = keyboard.nextDouble();        System.out.println("What is the height of the door (in feet)? ");        hd = keyboard.nextDouble();        System.out.println("Door space is: " + itemd(door, ld, hd, doorspace)); } System.out.println("Enter Number Of Windows"); window = keyboard.nextDouble(); for(int windows = 0; windows < window; windows++) { System.out.println("What is the length of the window (in feet)? ");        lw = keyboard.nextDouble();        System.out.println("What is the height of the window (in feet)? ");        hw = keyboard.nextDouble();        System.out.println("Window space is: " + itemw(window, lw, hw, windowspace)); } System.out.println("Enter Number Of Bookshelves"); bookshelf = keyboard.nextDouble(); for(int bookshelves = 0; bookshelves < bookshelf; bookshelves++) { System.out.println("What is the length of the bookcase (in feet)? ");     lb = keyboard.nextDouble();     System.out.println("What is the height of the bookcase (in feet)? ");     hb = keyboard.nextDouble();     System.out.println("What is the width of the bookcase (in feet)? ");     wb = keyboard.nextDouble();     System.out.println("The wall space for the bookshelf is: " + itembw(bookshelf, lb, hb, bookspacef));     System.out.println("The floor space for the bookshelf is: " + itembf(bookshelf, lb, wb, bookspacef)); } System.out.println("What is the preferred option? Ceramic Tile - 1, Hardwood - 2, Carpet - 3 and Linoleum Tile - 4");        floortype = keyboard.nextInt();        System.out.println("Enter Budget");        budget = keyboard.nextInt();                        double wallspace = (2 * (length * height) + 2 * (width * height) - (ld * hd) - (lb * hb) );                double floorspace = ((length * width) - (lb * wb));                                        if (floortype == 1 && floortype == 1 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget is Ceramic Tile: " + "$" + floorspace * ceramictile);        }                  if (floortype == 2 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget in Hardwood:" + "$" + floorspace * hardwood);        }                   if (floortype == 3 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring type based on budget is Carpet: " + "$" + floorspace * carpet);        }                  if (floortype == 4 && budget >= floortype * floorspace)        {         System.out.println(" The available flooring tybe based on budget is Linoleum tile: " + "$" + floorspace * linoleumtile );        }          if(floortype == 0){              if(budget > ceramictile * floorspace){                System.out.println(" The available flooring type based on budget is Ceramic Tile: " + "$" + floorspace * ceramictile);              }             if (budget > hardwood * floorspace){                System.out.println(" The available flooring type based on budget is Hardwood: " + "$" + floorspace * hardwood);             }             if (budget > carpet * floorspace){             System.out.println(" The avaiablabe flooring type based on budget is Carpet: " + "$" + floorspace *  carpet);             }             if (budget > linoleumtile * floorspace){             System.out.println(" The avaiable flooring type based on budget is Linoleum Tile: " + "$" + floorspace * linoleumtile);             }          }                        System.out.println(" The total wall space is: " + wallspace); // Prints out the total wall space                System.out.println(" The total floor space is: " + floorspace); // Prints out the total floor space             // System.out.println(" The cost for paintng is: " + costp * wallspace );             // System.out.println(" The cost for flooring is: " + costf * floorspace);        // The code closes the keyboard input        keyboard.close();                                         } private static double itembf(double bookshelf, double lb, double wb, double bookspacef) { bookspacef = lb * wb; return (int) bookspacef; } private static double itembw(double bookshelf, double lb, double hb, double bookspacew) { bookspacew = lb * hb; return (int) bookspacew; } private static double itemw(double window, double lw, double hw, double windowspace) { windowspace = lw * hw; return (int) windowspace; } private static int itemd(double door, double ld, double hd, double doorspace) { doorspace = ld * hd; return (int) doorspace; } }

The measurements just have to be in feet, But have I done the program correctly?

Okay Thanks I got it. Here is the code let me know if this is correct. Thanks!

package Hw; import java.util.Scanner; public class HouseReno3   { public static void main(String[] args) { // Initialize and Declare Variables double ceramictile = 4.00; double hardwood = 3.00; double carpet = 2.00; double linoleumtile = 1.00; // Initialize Variables int floortype; int budget; double length; double height; double width; double ld = 0; double hd = 0; double lw = 0; double hw = 0; //double lw2; //double hw2; double lb = 0; double hb = 0; double wb = 0; double door = 0; double window = 0; double bookshelf = 0; double doorspace = 0; double windowspace = 0; double bookspacew = 0; double bookspacef = 0; doorspace = itemd (door, ld, hd, doorspace); windowspace = itemw (window, lw, hw, windowspace); bookspacew = itembw (bookshelf, lb, hb, bookspacew); bookspacef = itembf (bookshelf, lb, wb, bookspacef); // double costp; // double costf; // Initialize Scanner Scanner keyboard = new Scanner (System.in); System.out.println("Enter Number Of Doors"); door = keyboard.nextDouble(); for(int doors = 0; doors < door; doors++) {        System.out.println("What is the length of the door (in feet)? ");        ld = keyboard.nextDouble();        System.out.println("What is the height of the door (in feet)? ");        hd = keyboard.nextDouble();        System.out.println("Door space is: " + itemd(door, ld, hd, doorspace)); } System.out.println("Enter Number Of Windows"); window = keyboard.nextDouble(); for(int windows = 0; windows < window; windows++) { System.out.println("What is the length of the window (in feet)? ");        lw = keyboard.nextDouble();        System.out.println("What is the height of the window (in feet)? ");        hw = keyboard.nextDouble();        System.out.println("Window space is: " + itemw(window, lw, hw, windowspace)); } System.out.println("Enter Number Of Bookshelves"); bookshelf = keyboard.nextDouble(); for(int bookshelves = 0; bookshelves < bookshelf; bookshelves++) { System.out.println("What is the length of the bookcase (in feet)? ");     lb = keyboard.nextDouble();     System.out.println("What is the height of the bookcase (in feet)? ");     hb = keyboard.nextDouble();     System.out.println("What is the width of the bookcase (in feet)? ");     wb = keyboard.nextDouble();     System.out.println("The wall space for the bookshelf is: " + itembw(bookshelf, lb, hb, bookspacef));     System.out.println("The floor space for the bookshelf is: " + itembf(bookshelf, lb, wb, bookspacef)); } } private static double itembf(double bookshelf, double lb, double wb, double bookspacef) { bookspacef = lb * wb; return (int) bookspacef; } private static double itembw(double bookshelf, double lb, double hb, double bookspacew) { bookspacew = lb * hb; return (int) bookspacew; } private static double itemw(double window, double lw, double hw, double windowspace) { windowspace = lw * hw; return (int) windowspace; } private static int itemd(double door, double ld, double hd, double doorspace) { doorspace = ld * hd; return (int) doorspace; } }

this is the updated code. Thanks


package Hw; import java.util.Scanner; public class HouseReno3   { public static void main(String[] args) { // Initialize and Declare Variables double ceramictile = 4.00; double hardwood = 3.00; double carpet = 2.00; double linoleumtile = 1.00; // Initialize Variables int floortype; int budget; double length; double height; double width; double ld = 0; double hd = 0; double lw1; double hw1; double lw2; double hw2; double lb; double hb; double wb; double door = 0; double window = 0; double bookshelf = 0; double doorspace = 0; doorspace = itemd (door, ld, hd, doorspace); // double costp; // double costf; // Initialize Scanner Scanner keyboard = new Scanner (System.in); System.out.println("Enter Number Of Doors"); door = keyboard.nextDouble(); for(int doors = 0; doors < door; doors++) { itemd (door, ld, hd, doorspace);        System.out.println("What is the length of the door (in feet)? ");        ld = keyboard.nextDouble();        System.out.println("What is the height of the door (in feet)? ");        hd = keyboard.nextDouble();        System.out.println("Doorspace is: " + doorspace); } System.out.println("Enter Number Of Windows"); window = keyboard.nextDouble(); for(int windows = 0; windows < window; windows++) { System.out.println("What is the length of the window (in feet)? ");        lw1 = keyboard.nextDouble();        System.out.println("What is the height of the window (in feet)? ");        hw1 = keyboard.nextDouble(); } System.out.println("Enter Number Of Bookshelves"); bookshelf = keyboard.nextDouble(); for(int bookshelves = 0; bookshelves < bookshelf; bookshelves++) { System.out.println("What is the length of the bookcase (in feet)? ");     lb = keyboard.nextDouble();     System.out.println("What is the height of the bookcase (in feet)? ");     hb = keyboard.nextDouble();     System.out.println("What is the width of the bookcase (in feet)? ");     wb = keyboard.nextDouble(); } } private static int itemd(double door, double ld, double hd, double doorspace) { doorspace = ld *hd; return (int) doorspace; } }