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vovikov84 [41]
3 years ago
8

Create an application that determines the final cost of food items and non-food items, assuming only non-food items are taxed. T

he interface should prompt the user for the total cost of food items and the total cost of non-food items. Display the final cost when an Answer button is clicked. Use a constant for the tax with value of 7%.
Computers and Technology
1 answer:
Maslowich3 years ago
8 0

Answer:

Write the following in the button click event:

<em>    double total = Convert.ToDouble(txtNonFood.Text) + Convert.ToDouble(txtFood.Text) * (1 + 0.07); </em>

<em>            MessageBox.Show("Total: " + total);</em>

Explanation:

The app is created using Winforms C#.

First, is to design the form using 2 labels, 2 textboxes and 1 button.

<em>The text of the labels are set to "Food Items" and "Non Food Items", respectively.</em>

<em>The name of the textboxes are set to txtFood and txtNonFood respectively.</em>

Next, is to ensure that the textboxes accept only numbers and 1 decimal point.

So, we need to create a keypress event:

<em>private void txtNonFood_KeyPress(object sender, KeyPressEventArgs e){</em>

<em />

And then, write the click event to display the total amount of items (as written in the answer section):

This calculates the total amount

<em>    double total = Convert.ToDouble(txtNonFood.Text) + Convert.ToDouble(txtFood.Text) * (1 + 0.07); </em>

<em>This prints the total amount</em>

<em>            MessageBox.Show("Total: " + total);</em>

<em>See attachment 1 for app interface & attachments 2 and 3 for complete program code</em>

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(Palindrome integer) Write the methods with the following headers // Return the reversal of an integer, i.e., reverse(456) retur
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Answer:

import java.util.Scanner;

public class PalindromeInteger {

public static void main(String[] args) {

 // Create an object of the Scanner class to allow for user's inputs

 Scanner input = new Scanner(System.in);

 // Create a prompt to display the aim of the program.

 System.out.println("Program to check whether or not a number is a palindrome");

 // Prompt the user to enter an integer number.

 System.out.println("Please enter an integer : ");

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 int number = input.nextInt();

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 // Display the necessary output.

 if (isPalindrome(number)) {

  System.out.println(number + " is a palindrome integer");

 }

 else {

  System.out.println(number + " is a not a palindrome integer");

 }

}

// Method to return the reversal of an integer.

// It receives the integer as a parameter.

public static int reverse(int num) {

 // First convert the number into a string as follows:

 // Concatenate it with an empty quote.

 // Store the result in a String variable, str.

 String str = "" + num;

 // Create and initialize a String variable to hold the reversal of the  

 // string str. i.e rev_str

 String rev_str = "";

 // Create a loop to cycle through each character in the string str,

 // beginning at  the last character down to the first character.

 // At every cycle, append the character to the rev_str variable.

 // At the end of the loop, rev_str will contain the reversed of str

 for (int i = str.length() - 1; i >= 0; i--) {

  rev_str += str.charAt(i);

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 // Convert the rev_str to an integer using the Integer.parseInt()

 // method.  Store the result in an integer variable reversed_num.

 int reversed_num = Integer.parseInt(rev_str);

 // Return the reversed_num

 return reversed_num;

}

// Method to check whether or not a number is a palindrome integer.

// It takes in the number as parameter and returns a true or false.

// A number is a palindrome integer if reversing the number does not

//  change the  number itself.

public static boolean isPalindrome(int number) {

 // check if the number is the same as its reversal by calling the

 //reverse()  method declared earlier. Return true if yes, otherwise,

               // return false.

 if (number == reverse(number)) {

  return true;

 }

 return false;

}

}

Explanation:

The source code file for the program has also been attached to this response for readability. Please download the file and go through the comments in the code carefully as it explains every segment of the code.

Hope this helps!

Download java
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