Software Sales A software company sells a package that retails for $99. Quantity discounts are given according to the following table: Quantity Discount 10–19 20% 20–49 30% 50–99 40% 100 or more 50% Create an application that lets the user enter the number of packages purchased. The program should then display the amount of the discount (if any) and the total amount of the purchase after the discount.

Software Sales A software company sells a package that retails for $99. Quantity discounts are given according to the following table: Quantity Discount 10–19 20% 20–49 30% 50–99 40% 100 or more 50% Create an application that lets the user enter the number of packages purchased. The program should then display the amount of the discount (if any) and the total amount of the purchase after the discount.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter7: File Handling And Applications

Section: Chapter Questions

Problem 1PE

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Account numbers sometimes contain a check digit that is the result of a mathematical calculation. The inclusion of the digit in an account number helps ascertain whether the number is a valid one. Write an application named CheckDigit that asks a user to enter a four-digit account number and determines whether it is a valid number. The number is valid if the fourth digit is the remainder when the number represented by the first three digits of the four-digit number is divided by 7. For example, 7770 is valid, because 0 is the remainder when 777 is divided by 7. The next problems rely on the generation of a random number. You can create a random number that is at least mi n but less than max using the following statements: Random ranNumberCenerator = new Random(); int randomNumber; randomNumber = ranNumberGenerator .Next(min, max);
The Donut Shoppe sells four varieties of doughnuts: Glazed (1.05), Sugar (1.05), Chocolate (1.25), and Filled (1.50). It also sells regular coffee (1.50) and cappuccino (2.75). The store manager wants you to create an application that displays a customers subtotal, 6% sales tax, and total due. Create a Windows Forms application. Use the following names for the project and solution, respectively: Donut Project and Donut Solution. Save the application in the VB2017\Chap06 folder. Create the interface shown in Figure 6-57. When coding the application, use one independent Sub procedure to determine the subtotal, which is the total cost without the sales tax. Use a function to determine the sales tax. Use an event-handling Sub procedure to clear the output. Save the solution and then start and test the application.
For each of the following exercises, you may choose to write a console-based or GUI application, or both. Write a program for The Carefree Resort named ResortPrices that prompts the user to enter the number of days for a resort stay. Then display the price per night and the total price. Nightly rates are $200 for one or two nights; $180 for three or four nights; $160 for five, six, or seven nights; and $145 for eight nights or more.
The purpose of this exercise is to demonstrate the importance of testing an application thoroughly. Open the FixIt Solution.sln file contained in the VB2017\Chap04\FixIt Solution folder. The application displays a shipping charge that is based on the total price entered by the user, as shown in Figure 4-64. Start the application and then test it by clicking the Display shipping button. Notice that the Shipping charge box contains $13, which is not correct. Now, test the application using the following total prices: 100, 501, 1500, 500.75, 30, 1000.33, and 2000. Here too, notice that the application does not always display the correct shipping charge. (More specifically, the shipping charge for two of the seven total prices is incorrect.) Open the Code Editor window and correct the errors in the code. Save the solution and then start and test the application.
Name Formatter Create an application that lets the user enter the following pieces of data: • The user’s first name • The user’s middle name • The user’s last name • The user’s preferred title (Mr., Mrs., Ms., Dr., etc.) Assume the user has entered the following data: • First name: Kelly • Middle name: Jane • Last name: Smith • Title: Ms. The application should have buttons that display the user’s name formatted in the following ways: Ms. Kelly Jane Smith Kelly Jane Smith Kelly Smith Smith, Kelly Jane, Ms. Smith, Kelly Jane Smith, Kelly
Property Tax If you own real estate in a particular county, the property tax that you owe each year is calculated as 64 cents per $100 of the property’s value. For example, if the property’s value is $10,000, then the property tax is calculated as follows: Tax = $10,000 ÷ 100 × 0.64 Create an application that allows the user to enter a property’s value and displays the sales tax on that property.
Paint Job Estimator A painting company has determined that for every 115 square feet of wall space, 1 gallon of paint and 8 hours of labor will be required. The company charges $20.00 per hour for labor. Create an application that allows the user to enter the square feet of wall space to be painted and the price of the paint per gallon. The program should display the following data: • The number of gallons of paint required • The hours of labor required • The cost of the paint • The labor charges • The total cost of the paint job
A bag of cookies holds 40 cookies. The calorie information on the bag claims that there are 10 servings in the bag and that a serving equals 300 calories. Create an application that lets the user enter the number of cookies he or she actually ate and then reports the number of total calories consumed.
Cookie Calories A bag of cookies holds 40 cookies. The calorie information on the bag claims that there are 10 servings in the bag and that a serving equals 300 calories. Create an application that lets the user enter the number of cookies he or she actually ate and then reports the number of total calories consumed.
Falling Distance When an object is falling because of gravity, the following formula can be used to determine the distance the object falls in a specific time period: d =1/2gt2 The variables in the formula are as follows: d is the distance in meters, g is 9.8, and t is the amount of time in seconds that the object has been falling. Create an application that allows the user to enter the amount of time that an object has fallen and then displays the distance that the object fell. The application should have a method named FallingDistance. The FallingDistance method should accept an object’s falling time (in seconds) as an argument. The method should return the distance in meters that the object has fallen during that time interval.
A Costume shop requests a Computer application that advertizes Costume rentals. This week's Costume rental specials are as follows : Table Costume Price per week Renaissance Fair $40 Stormtrooper $49 Batman / Batgirl $36 Pirate $29 Write an application that allows the user to select any of the five costume rental specials. When the user selects a costume, the corresponding cost and a picture of the costume should be displayed. Clear each prior price and picture when the user selects a different costume. After selecting a costume, the user should be able to book the costume rental and then CLOSE the window. Show screenshot of work
A Costume shop requests a Computer application that advertizes Costume rentals. This week's Costume rental specials are as follows : Table Costume Price per week Renaissance Fair $40 Stormtrooper $49 Batman / Batgirl $36 Pirate $29 Write an application that allows the user to select any of the five costume rental specials. When the user selects a costume, the corresponding cost and a picture of the costume should be displayed. Clear each prior price and picture when the user selects a different costume. After selecting a costume, the user should be able to book the costume rental and then CLOSE the window. Visual BAsics