an introduction to programming and visual basic 2008 page 39 programming challenges rules form design and flowchart for #3 sales tax. how do i do this?
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To solve the programming challenge #3, "Sales Tax," in Visual Basic 2008, you'll need to design a form and create the necessary flowchart. Here's a step-by-step guide on how to approach this challenge:
1. Form Design:
- Open your Visual Basic 2008 IDE and create a new Windows Forms Application project.
- Design your form by adding the necessary components, such as labels, textboxes, and buttons.
- For this challenge, you will need labels for item name, item price, tax rate, and total price, along with corresponding textboxes.
- Also, add a "Calculate" button to initiate the tax calculation.
- Arrange and align the components appropriately to make the form user-friendly.
2. Flowchart:
- Create a flowchart to outline the sequence of steps for calculating the sales tax.
- Start with the "Begin" terminal shape and connect it with the "Input" shape.
- Within the "Input" shape, mention the items: item name, item price, and tax rate.
- Connect the input shapes with the calculation step showing the formula to calculate the sales tax amount.
- Proceed to compute the total price by adding the item price and the sales tax amount.
- Connect the calculation step to the "Output" shape, which displays the total price.
- Finally, connect the "Output" shape to the "End" terminal shape.
- Use appropriate decision shapes (diamonds) if any conditions or choices need to be made.
3. Programming:
- Start by opening the code-behind file for your form (`Form1.vb`).
- In the code file, define event handlers for the necessary form events, such as the button click event.
- Inside the button click event handler, gather the input values from the textboxes.
- Utilize appropriate variables to store the input values, such as `itemPrice`, `taxRate`, etc.
- Use the tax rate and the item price to calculate the sales tax amount.
- Calculate the total price by adding the item price and the sales tax amount.
- Display the total price in the designated output textbox.
It's important to note that the exact implementation may vary depending on your specific requirements and preferences. However, following these general steps should guide you through completing this programming challenge in Visual Basic 2008.