Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Module main()
// Local variables
Declare Real width, length, area

// Get the rectangle's width and length.
getRectangleSides(width, length)

// Get the rectangle's area.
Set area = calcArea(width, length)

// Display the area.
Display "The rectangle's area is ", area
End Module

// The getRectangleSides module prompts the user for
// a rectangle's width and length. The values are
// stored in the reference parameters.

Module getRectangleSides(Real Ref width, Real Ref length)
// Get the rectangle's width.
Display "Enter the rectangle's width."
Input width

// Get the rectangle's length.
Display "Enter the rectangle's length."
Input length
End Module

// The calcArea function accepts a rectangle's
// width and length as arguments, and returns
// the rectangle's area.

Function Real calcArea(Real width, Real length)
Return width * length
End Function

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