Chapter 1, Problem 1PC

Carpet Size

You have been asked to create an application for a carpet sales and installation business. The application should allow the user to enter the length and width of a room and calculate the room’s area in square feet. The formula for this calculation is

$Area=Length\times Width$

In this exercise, you will gain practice using Steps 1 through 6 of the programming process described in Section 1.4:

1. 1. Clearly define what the application is to do.
2. 2. Visualize the application running on the computer and design its user interface.
3. 3. Determine the controls needed.
4. 4. Define the values of each control’s relevant properties.
5. 5. Determine the event handlers and other code needed for each control.
6. 6. Create a flowchart or pseudocode version of the code.

Step 1:    Describe the following

characteristics of this application:

Purpose

Input

Process

Output

Step 2:    Draw a sketch of the application’s form and place all the controls that are needed.

Step 3:    Make a list of the controls you included in your sketch. List the control type and the name of each control.

Step 4:    List the value of the Text property for each control, as needed. (Remember, some controls do not have a Text property.)

Step 5:    List each method needed. Give the name of each method and describe what each method does.

Step 6:    For each method you listed in Step 5, draw a flowchart or write pseudocode.