Rectangle Area—Complete the Program
If you have downloaded this book’s source code from the companion Web site, you will find a partially written program named AreaRectangle.cpp in the Chapter 06 folder. (The companion Web site is at www.pearsonhighered.com/gaddis.) Your job is to complete the program. When it is complete, the program will ask the user to enter the width and length of a rectangle and then display the rectangle’s area. The program calls the following functions, which have not been written:
• getLength – This function should ask the user to enter the rectangle’s length and then return that value as a double.
• getWidth – This function should ask the user to enter the rectangle’s width and then return that value as a double.
• getArea – This function should accept the rectangle’s length and width as arguments and return the rectangle’s area. The area is calculated by multiplying the length by the width.
• displayData – This function should accept the rectangle’s length, width, and area as arguments and display them in an appropriate message on the screen.
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