Construct a class named rectangle that has double-precision data members named length and width. The class should have member methods named perimeter() and area() to calculate a rectangle's perimeter and area, a member method named setData() to set a rectangle's length and width, and a member method named showData() that displays a rectangle's length, width, perimeter, and area.

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter11: Introduction To Classes
Section11.2: Basic Class Functions
Problem 5E
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Construct a class named rectangle that has double-precision data members named length and width. The class should have member methods named perimeter() and area() to calculate a rectangle's perimeter and area, a member method named setData() to set a rectangle's length and width, and a member method named showData() that displays a rectangle's length, width, perimeter, and area. 

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